9. If A, B, C and the Do Nothing are possible alternatives you may possibly invest in where A, B, and Cs initial cost are $10,000, $15,000, and $20,000. You have a budget of $40,000. How many possible alternative groupings are there if you must spend at least 60% of your budget and A & B are mutually exclusive?

a. 2 b. 3 c. 4 d. 5 e. None