Given the Standard Radiation constants C$1,$ C$2,$ C$3$ as $3\mathrm{.}742{10}^{8}W.\frac{m^4}{m^2},1\mathrm{.}439{10}^{4}m.K$ and $2898m.K$ respectively, Find the maximum spectral emissive power $E_{}$ as well as the wavelength $max$ at which this maximum emission occurs.

a$.E=13\mathrm{.}55{10}^5\frac{W}{m^2}.m,max=1\mathrm{.}16m$

b$.E=10\mathrm{.}55{10}^5\frac{W}{m^2}.m,{}_{\text{m}\text{a}\text{x}}=1\mathrm{.}7m$

c$.E=12\mathrm{.}55{10}^5\frac{W}{m^2}.m,max=1\mathrm{.}16m$

d$.E=12\mathrm{.}55{10}^6\frac{W}{m^2}.m,max=4\mathrm{.}16m$

Clear my choice