For funding investments and/or other cash uses by medium and long-term sources, the companies have four different alternatives. These are generally in the forms of bank borrowing, borrowing from special institutions, debt issuance and equity finance, securitization. Furthermore, depending on the peculiarities of the funding needs leasing can be another source of medium and long-term financing. Additionally, the internal sources such as Retained Earning and Depreciation provide financing to the corporate. As can also be understood from the information given “Retained Earning” and “Depreciation” are the internal sources which provide financing to the corporate, so the correct answer is B.