Answer:
a. 12.60%
Explanation:
The Eco Brothers Inc. cost of common can be determined through the following mentioned formula:
cost of common=Cost of debt+risk premium over cost of debt
In the given question
Cost of debt=8.75%
Risk premium over cost of debt=3.85%
Cost of common=8.75%+3.85%
=12.6%
So based on the above calculations, the answer is a. 12.60%