Q. Pick out the wrong statement.

(A) Overall heat transfer co-efficient in a heat exchanger is controlled by the value of the film co-efficient, which is higher

(B) In industrial practice, sub-cooling of condensate is required, when the condensate is a volatile liquid and is to be transferred for storage

(C) Film co-efficient for vaporisation decreases as a result of vapor binding

(D) The condensing film co-efficient is about 3 times lower for vertical condenser as compared to the equivalent horizontal condenser for identical situation