Your Friend Is Writing a Paper About Social Mobility in the U.S

Your friend is writing a paper about social mobility in the U.S. As her friend, you advise her:

A) there is little substantial upward social mobility
B) upward mobility is primarily found at the middle income levels, with middle-class children moving up from their parents
C) one reason for so much social mobility is that more avenues for mobility exist than in the past, such as the availability of college
D) the U.S. has more social mobility than many other industrialized, developed nations, including Canada, Finland, Sweden, and Germany
E) most Americans support the estate tax because it would make society more equitable