Effect of temperature on equilibrium constant

2014 AIPMT 1 question

1. 1 Equilibrium
   For a given exothermic reaction, $K_p$ and $K_p'$ are the equilibrium constants at temperatures $T_1$ and $T_2$, respectively. Assuming that heat of reaction is constant in temperature range between $T_1$ and $T_2$, it is readily observed that:
   A $K_p > K_p'$ B $K_p < K_p'$ C $K_p = K_p'$ D $K_p = \frac{1}{K_p'}$
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