All of the Following Persons Are Eligible for a Benefit

All of the following persons are eligible for a benefit under the retirement portion of the Social Security program EXCEPT

A) a divorced spouse,age 55,who was married to the retired worker for 6 years.
B) a retired worker's 63 year-old spouse who is no longer caring for children.
C) a retired worker's 52 year-old spouse who is caring for a 12 year-old daughter of the retired worker.
D) a retired worker's unmarried 20 year-old son who has been severely disabled since an automobile accident while he was in elementary school.