What is the correct answer and why are the other ones wrong?

4. Which of the following must be true if at the tenth unit of output, marginal cost (MC) is $130 and average total cost (ATC) is $150 ? MCCATC TC and 6 291 MSRinse Jom A. ATC of producing the ninth unit is higher than $150. TC = 15 TC X B.ATC of producing the ninth unit is less than $150. change in Q TC e. MC of producing the ninth unit is higher than $130. 2 16 2ginsvbs unit D. The average variable cost of producing the tenth unit is higher than $150. IMC ATC E. The average variable cost of producing the tenth unit is equal to $20.sun 9 10 130 150 10