Critical Reasoning

International Policy Adviser: People over the age of 65 are underrepresented in the government of Country X. Because the government sets the country's policy priorities and passes new laws, the underrepresentation of people over the age of 65 results in a significant lack of consideration for issues important to this age group, such as pensions, age-related welfare, and employment discrimination; only an increase in the number of government officials will solve the problem.

Which of the following best describes an assumption implicit to the international policy adviser's argument?

a)A significant increase in the size of Country X's government would be required in order to increase the representation of people over the age of 65 in the government.

b)A significant increase in the representation of people over the age of 65 in Country X's government would result in an increase in the consideration for issues affecting people in this age group.

c)A significant increase in funding toward educating the government about issues affecting people over age 65 would result in more serious consideration for issues affecting people in this age group.

d)A significant increase in funding for adult education targeted to people over age 65 would result in an increase in the number of such people in Country X's government.

e)A significant increase in the representation of people over the age of 65 in Country X's government would have to precede any increase in the number of high-ranking government officials who are over the age of 65.

[spoiler]OA is B. But the last line in the argument states that "only an increase in the number of government officials will solve the problem" - So from this why can't choice A be correct? Please explain . I don't deny B though. But why can't A be correct as well?[/spoiler]