For a chemical reaction $\mathrm{A}+\mathrm{B}=\mathrm{C}+\mathrm{D}$ $\left({\mathrm{\Delta }}_{\mathrm{r}}{\mathrm{H}}^{\mathrm{\Theta }}=80 \mathrm{kJ} {\mathrm{mol}}^{-1}\right)$ the entropy change ${\mathrm{\Delta }}_{\mathrm{r}}{\mathrm{S}}^{\mathrm{\Theta }}$ depends on the temperature $\mathrm{T}$ (in $\mathrm{K}$) as ${\mathrm{\Delta }}_{\mathrm{r}}{\mathrm{S}}^{\mathrm{\Theta }}=2\mathrm{T}\left({\mathrm{JK}}^{-1}{\mathrm{mol}}^{-1}\right)$. Minimum temperature at which it will become spontaneous is                  $\mathrm{K}$. (Integer)

Hence, the correct answer is 200.