What Is the Change in Internal Energy of 2 ${ }^{\circ} \mathrm{C}$

What is the change in internal energy of 2.00 moles of a monatomic ideal gas that cools from 200 ${ }^{\circ} \mathrm{C}$ to $-50^{\circ} \mathrm{C}$ ?

A) $-13,049 \mathrm{~J}$
B) $-6,236 \mathrm{~J}$
C) $-750 \mathrm{~J}$
D) $-3,742 \mathrm{~J}$
E) $-500 \mathrm{~J}$