Need help on 28, thanks

Carter, Inc. can make 100 units of a necessary component part with the following costs: If Carter purchases the component externally, $30,000 of the fixed costs can be avoided. At what purchase price for the 100 units does it not matter whether the company chooses to buy or make the component? A) $200,000 B) $170,000 C) $230,000 D) $240,000 Carter, Inc. can make 100 units of a necessary component part with the following costs: If Carter can purchase the component externally for $220,000 and only $10,000 of the fixed costs can be avoided, what is the correct decision