Answer:
(A) No change
Step-by-step explanation:
Since the TC for filling 1000 returns increases from $2000 to $25000, this will remain fixed for any increase in the number of returns filed.
Even if the returns filed increases from 1000 to 2000 or 3000, the TC will remain the same.
Thus, there will be no change in MC.
Thus, correct option is (A) No change