The Molar Specific Heat at Constant Pressure at 0 $\degree$ C of an Ideal Monatomic Gas Is:
A)

The molar specific heat at constant pressure at 0 $\degree$ C of an ideal monatomic gas is:

A) $\frac{1}{2} R$ .
B) R.
C) $\frac{3}{2} R$ .
D) 2R.
E) $\frac{5}{2} R$ .