Pursuant to Article 55/1 TCC the listed acts are major examples of unfair competition: a) in addition to other unlawful acts, the advertisement and sale methods that are against the principle of honesty and especially

1. degrading a competitors’ business, products, prices or activities with false and misleading declarations,

2. providing false or misleading information on himself/herself, his/her commercial enterprise, logos, products, goods, activities, prices, sales campaigns, business relations or by this way letting a third party lead in competition,

3. despite the fact that he/she does not hold a diploma or a certificate acting as if he/she holds such degrees in order to cause an image that he/she has an exceptional capability,

4. causing and benefiting from confusion deliberately created with a competitors’ business, products or works, 

5. providing false or misleading information about himself/herself, his/her commercial enterprise, products, goods, activities, prices, or by providing degrading information about competitors, or compare with others, goods, products or prices or letting a third party lead in competition,

6. more than once, selling some selected products below the supply prices and notably declaring these in its advertisements, and misleading its customers concerning its own, or its competitors’ talents, by selling these products at their supply prices,

7. misleading customers as to the real value of products using bundling practices,

8. restricting the choice of customers using aggressive sale tactics, and/or

9. using provisions containing false or missing information as to the price, payment conditions, contract period, consumers’ right in an instalment sale, or consumer loan agreements,

10. not anoouncing its trade name explicitly in the sales with instalments or in similar legal transactions or overall or total sales price or not announcing the additional cost in Turkish Liras in sales with instalments or the annual ratios,

11. announcing its trade name or net value of the credit or the total costs or the effective annual interest in consumer credits,

12. within the framework of its enterprise, using incomplete or incorrect information on the contractual formulations where subject, price, payment conditions, contract period, withdrawal or termination right or the right of the consumer to pay before the due date. 

Therefore, the correct option is E.