The Fact That Many of Today's Commercials for Children's Gear

The fact that many of today's commercials for children's gear now include Dad interacting with the kids and being involved in purchase decisions reflects:

A) that men earn more money than women.
B) the increasing clarity of gender roles.
C) the importance that marketers are giving to changing gender roles.
D) that higher levels of education lead to better jobs and higher incomes.
E) the change in the gender composition of a country.