The following are some important points relevant to the acquisition process of a commercial enterprise: 

a. A commercial enterprise is to be acquired with all its credits and debts,

b. Pursuant to the TCC, it is possible to acquire a commercial enterprise with all the elements therein without,

c. The acquisition needs to be agreed with a written agreement,

d. In some cases, depending on the nature and turnover threshold of the acquisition, the agreement may need to be notified to the Competition Authority.

Therefore, the correct option is C.