Pat Gives Up a $40,000 Per Year Job to Stay

Pat gives up a $40,000 per year job to stay at home and take care of the house. By so doing, Pat saves $15,000 in child care and house cleaning services which he now performs himself. The direct effect on GDP from Pat's decision is a decrease of

A) $25,000.
B) $30,000.
C) $40,000.
D) $15,000.
E) $55,000.