Pick out the correct statement.

• A. Higher is the temperature of the radiating body, higher is the wavelength of radiation.
• B. Logarithmic mean area is used for calculating the heat flow rate through a thick walled cylinder.
• C. The wavelength corresponding to maximum mono-chromatic emissive power increases with rise in temperature.
• D. Solid angle subtended by the finite surface at the radiating element is called the angle of incidence.