Answer:
A) Trying to determine whether the company's net income will result in a stock price increase  - Investors in common stock
B) Trying to determine whether an advertising proposal will be cost-efficient  - Marketing managers
C) Trying to determine whether the company can pay its obligations  - Creditors
D) Trying to determine whether the company should employ debt or equality financing  - Chief Financial Officer
E) Trying to determine whether the company complied with tax laws - Internal Revenue Service