The correct answer is: D. All of the above
Long-term fund sources are the sources of funds that a company can use to finance its long-term assets and operations. These sources include retained earnings, debentures, and share capital.
Retained earnings are the accumulated earnings of a company that have not been distributed to shareholders as dividends. They are a source of internal financing that can be used to invest in new assets, expand operations, or repay debt.
Debentures are long-term loans that a company borrows from investors. They are a source of external financing that can be used to finance long-term assets or operations.
Share capital is the amount of money that a company raises by selling shares to investors. It is a source of external financing that can be used to finance long-term assets or operations.
All of these sources of funds can be used to finance a company’s long-term assets and operations. The choice of which source to use will depend on a number of factors, such as the company’s financial situation, its investment objectives, and the cost of capital.