Pick out the wrong statement ?

A. The amount of heat involved in the condensation or vaporisation of 1 kg of a fluid is the same

B. Propagation velocity for travel of heat radiation through vacuum is equal to the velocity of the light

C. Heat transfer by radiation cannot occur across an absolute volume

D. In case of a shell and tube heat exchanger, the pressure drop through the shell is proportional to the number of times the fluid crosses the bundle between baffles

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