Following figure shows spectrum of an ideal black body at four different temperatures. The number of
correct statements from the following is_______ 

 

 

 

 

 

 

 

 

A. $T_4>T_3>T_2>T_1$
B. The black body consists of particles performing simple harmonic motion.
C. the peak of the spectrum shifts to shorter wavelength as temperature increases.
D. $\frac{{\mathrm{T}}_1}{{\mathrm{v}}_1}=\frac{{\mathrm{T}}_2}{{\mathrm{v}}_2}=\frac{{\mathrm{T}}_3}{{\mathrm{v}}_3}\ne$constant
E. The given spectrum could be explained using quantisation of energy.