Answer: Option A and D
Explanation: In simple words, weighted average cost of capital refers to the expected amount for the return that a company has to pay to all its security holders.
Weighted average cost of capital should be abducted as per the risk of the project that a company is willing to take as every prospect have different needs and requirements which directly affects the level of threat of capital loss.
For a high risk project WACC should be increased and vice-versa.