Pick Out the Wrong Statement

Pick out the wrong statement.

A) In process heat exchangers, saturated steam is preferred over the superheated steam
B) The maximum is the emissive power of a surface at a temperature T1 occurs at a wavelength of ?1. If the surface temperature is halved, the maximum in the emissive power would occur at a wavelength of 0.5 ?1
C) When a vertical plate is heated in infinite air environmental under natural convection conditions, the velocity profile in air, normal to the plate, exhibits a maximum
D) A body at 925 K emits an energy of 1.42 x 1011?W/m² (? is the Stefan-Boltzmann constant) in the wavelength band between 3 ?m to 4 ?m. The fraction of this energy in the total energy emitted over the entire wavelength range is equal to emissivity