A black body of surface 1.0m² emits electromagnetic radiation of peak wavelength 2.90×10^–6m. Which of the following statements about the body are correct?

I.    The temperature of the body is 1000 K.
II.   The energy radiated by the body in one second is 5.7×10⁴ J.
III.  The body is a perfect absorber of electromagnetic radiation.

A. I and II only

B. I and III only

C. II and III only

D. I, II and III

D