问题详情

What do we know about the unmarried men, according to the last sentence of the first paragraph？
A．They got a 16% increase in household income.
B．They got a 16% decrease in household income.
C．Only 16 % of them were in financial difficulty.
D．Only 16% of them earned more than in 1970.请帮忙给出正确答案和分析，谢谢！