The Authors Claim That "Social Differences in the Meaning of Literacy

The authors claim that "social differences in the meaning of literacy are crucial." An example of this concept is how

A) in a traditional, nonindustrial society, literacy typically is just as highly valued for full social participation and status as in a modern postindustrial society.
B) the concept "literacy" may be used differently in different contexts to mean very different things, from the ability to sign one's name to the ability to follow complex written instructions.
C) literacy today may mean something very different for men than for women.
D) All of these answers are correct.