An Ideal Monatomic Gas Expands Isothermally from State a to State

An ideal monatomic gas expands isothermally from state A to state B.The gas then cools at constant volume to state C.The gas is then compressed isobarically to D before it is heated until it returns to state A.

-What is the temperature of the gas when it is in state C?

A) -33 °C
B) 130 °C
C) 327 °C
D) 817 °C
E) 1500 °C