Which of the Following Questions Must a Sales Manager Answer

Which of the following questions must a sales manager answer when designing an effective combination compensation plan?

A) What size sales territory will yield the appropriate sales volume for providing equitable commissions and bonuses?
B) How can the most people be rewarded with the least expense?
C) Should there be a ceiling on incentive earnings?
D) How does the compensation plan support the company's mission?
E) All of the above are questions that a sales manager must answer when designing an effective combination compensation plan