Chemistry Question from JEE Main 2026 · 24 January, Shift 1

$A \rightarrow D$ is an endothermic reaction occurring in three elementary steps:

(i) $A \rightarrow B \quad \Delta H_i = +\text{ve}$

(ii) $B \rightarrow C \quad \Delta H_{ii} = -\text{ve}$

(iii) $C \rightarrow D \quad \Delta H_{iii} = -\text{ve}$

Which of the following graphs between potential energy (y-axis) versus reaction coordinate (x-axis) correctly represents the reaction profile of $A \rightarrow D$?