When 5 litres of a gas mixture of methane and propane is perfectly combusted at 0°C and 1 atmosphere, 16 litres of oxygen at the same temperature and pressure is consumed. The amount of heat released from this combustion in kJ $(ΔH_{comb.} (CH_4) = 890 kJ mol^{-1}, ΔH_{comb.} (C_3H_8) = 2220 kJ mol^{-1})$ is
(a) 38
(b) 317
(c) 477
(d) 32
(a) 38
(b) 317
(c) 477
(d) 32