Question 5 Not yet answered Marked out of 1.00 Flag question If the highest level of activity achieved in a period in a company is 80,000 units with the total cost of $ 60,000 and the lowest level of activity achieved in that period is 40,000 unit with a total cost of $ 36,000, what is the total variable cost at the highest level of activity? Oa. $40,000 O b. $48,000 Oc. $ 42,000 Od. $ 52,000