Answer:
$28,000 and $12,000, respectively
Explanation:
Marginal cost = incremental cost from Plan C to Plan D
= total cost (plan D) - total cost (plan C)
= 72,000 - 44,000 = $28,000
Marginal benefit = incremental benefit from Plan C to Plan D
= total benefit (plan D) - total benefit (plan C)
= 64,000 - 52,000 = $12,000
Therefore marginal cost and benefits for Plan D = $28,000 and $12,000, respectively
