
Answer and Explanation:
a. The computation of revenue, costs, and profit per day for each alternative is shown below:-
Particulars       A       B        C
Revenue       180     216       270
         (120 × $1.50) (180 × $1.20) (180 × $1.50)
Costs Â
Lemonade         60       90       90
         (120 × $0.50) (180 × $0.50) (180 × $0.50)
Rent              $30       $30     $30
Advertising          0        0        0
Profit              90       96        150
For computing the profit we simply deduct the cost from the revenue
b. Since, C gave maximum profit. So, C is the right answer.
c. Since, Rent is not an accurate cost as rent is the same for all. so, it can be ignored. Hence, the correct answer is A.
d. Advertising is an equal cost as advertising differs across different alternatives, it should not be ignored.
Hence, the correct answer is A.