Sheffield Corp., Inc. can produce 100 units of a component part with the following costs: Direct Materials $15700 Direct Labor 7200 Variable Overhead 16700 Fixed Overhead 11500 If Sheffield Corp. can purchase the component part externally for $46700 and only $4200 of the fixed costs can be avoided, what is the correct make-or-buy decision? Buy and save $200 Buy and save $7100 Make and save $200 Make and save $2900