All of the following statements concerning monthly Social Security benefits for family members of a deceased or retired worker are correct EXCEPT :

A.The spouse of a deceased worker is eligible to receive 75 percent of the worker's PIA ( primary insurance amount ) at full retirement age .

B. The 15 - year old child of a deceased worker is eligible to receive 75 percent of the worker's PIA (primary insurance mount)

C. The 15 - year old child of a retired worker is eligible to receive 50 percent of the worker's PIA (primary insurance amount)

D.The spouse of a retired worker is eligible to receive 50 percent of the worker's PIA (primary surance amount) at full retirement age