Saturated refrigerant 134a vapor at 40°C is condensed as it flows through a tube at a rate of 0.2 kg/s. The condensate leaves the tube as saturated liquid at 40°C. The rate of heat transfer from the tube is:

A. 53.4 kJ/s
B. 162 kJ/s
C. 74.4 kJ/s
D. 32.4 kJ/s
E. 21.0 kJ/s