2 Moles of Oxygen is heated from $0 ^{\circ} C$ at constant pressure till its volume increases by $20%$. The specific heat of Oxygen is given to be $0.22$ cal$\;g^{-1} K^{-1}$. What is the amount of heat required?

Question

(A) 768 cal (B) 384 cal (C) 0 cal (D) 514 cal