Mary Is an 18-Year-Old High School Graduate Who Can Take

Mary is an 18-year-old high school graduate who can take a job paying $30,000 without further education. The prevailing interest rate is 10 percent.
-Now assume that after completing a one-year post-secondary program, Mary would earn $60,000 than if she had stopped her education right after high school. The present value from age 18 to age 20 would now be given by:

A) $109,909.
B) $99,300.
C) $104,132.
D) $82,066.
E) $120,000.