Based on the information in this chapter, lets see who gets a better deal, a greater net

Question:

Based on the information in this chapter, let’s see who gets a better deal, a greater net benefit, from Social Security. In each pairing, choose one, or write “unclear.”
Women or men?
Married couples or singles?
People born in 1910 or people born in 1965?
High-income earners or low-income earners?