For hydrogen gas $\;C_{p}-C_{v} =a\;$ and for oxygen $\;C_{p}-C_{v}=b\;$ . Then the relation between a and b is given by

Question

$(a)\;a=16\;b\qquad(b)\;b=16\;a\qquad(c)\;a=4\;b\qquad(d)\;a=b$