Following figure shows spectrum of an ideal black body at four different temperatures. The number of correct statement/s from the following is ____…

Following figure shows spectrum of an ideal black body at four different temperatures. The number of correct statement/s from the following is $\displaystyle \_\_\_\_$ A. $\displaystyle \mathrm{T}_4>\mathrm{T}_3>\mathrm{T}_2>\mathrm{T}_1$ 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. $\displaystyle \frac{T_1}{v_1}=\frac{T_2}{v_2}=\frac{T_3}{v_3} \neq$ constant E. The given spectrum could be explained using quantisation of energy.