Pick Out the Wrong Statement

Pick out the wrong statement.

A) In drying a solid containing moisture above the critical moisture content the number of degrees of freedom is 2
B) Sherwood number in mass transfer corresponds to Nusselt number in heat transfer and Schmidt number to Prandtl number
C) Forced convection is relatively more effective in increasing the rate of mass transfer, if Schmidt number is larger
D) Hot gases at moderate pressure are usually in the shell side of shell and tube heat exchangers. At higher pressure, however, it is customary to put gas in the tube side