64. The dry exhaust gas from the oil engine has the following gravimetric analysis:

CO2 = 21.6% O2 = 4.2% N = 74.2%

Specific heats at constant pressure for each component of the exhaust gas in kCal/kg-°C are:

CO2 = 0.203 O2 = 0.219 N = 0.248

Calculate the specific gravity if the molecular weight of air is 28.97 kg/kg-mol.

A. 0.981

B. 1.244

C. 1.055

D. 0.542