NEET 2025 Chemistry question on Equilibrium

For the reaction $\text{A}(g) \rightleftharpoons 2\text{B}(g)$, the backward reaction rate constant is higher than the forward reaction rate constant by a factor of 2500, at 1000 K.

[Given : $R = 0.0831\,\text{L atm mol}^{-1}\,\text{K}^{-1}$]

$K_P$ for the reaction at 1000 K is