Marvin and Simone Are a Retired Couple Living on Income

Marvin and Simone are a retired couple living on income from their investments and Social Security benefits.During the current year,they receive the following:
$\begin{array}{lr}\text { Consulting fee from Burton Industries } & \$ 35,000 \\\text { Interest on municipal bonds } & 7,000 \\\text { Social Security benefits } & 20,000\end{array}$
Marvin and Simone's adjusted gross income is:

A) $45,000
B) $47,800
C) $52,000
D) $55,000
E) $61,000