If the pressures at the beginning and end of compression in an Otto cycle engine are 1 kg/cm2 and 8 kg/cm2 respectively the air standard efficiency will be

If the pressures at the beginning and end of compression in an Otto cy

1.	If the pressures at the beginning and end of compression in an Otto cycle engine are 1 kg/cm2 and 8 kg/cm2 respectively the air standard efficiency will be
A.	45%
B.	50%
C.	57%
D.	50%
E.	40%
Answer» E.