The volume (V) of a monatomic gas varies with its temperature (T), as shown in the graph. The ratio of work done by the gas, to the heat absorbed by it, when it undergoes a change from state A to state B, is <br>

Question

( A ) $\frac{1}{3}$
( B ) $\frac{2}{7}$
( C ) $\frac{2}{5}$
( D ) $\frac{2}{3}$