Chemistry · Structure of atom

Consider the following statements regarding the characteristics of black body radiation: (A) A black body is a perfect radiator and perfect absorber of radiant energy. (B) The amount of light emitted and its spectral distribution depend only on its temperature. (C) At a given temperature, intensity of radiation emitted increases with increase of wavelength, reaches a maximum, and then decreases. (D) Carbon black approximates fairly closely to a black body. Which of the above statements are correct?

1. A
   (A), (B) and (C) only
2. B
   (A), (B), (C) and (D)
3. C
   (B) and (D) only
4. D
   (A) and (C) only