Chemical Kinetics: JEE Main 2026 Chemistry question

$\mathrm{A \rightarrow D}$ is an endothermic reaction occurring in three steps (elementary). (i) $\mathrm{A \rightarrow B}$ $\Delta H_i = +\mathrm{ve}$ (ii) $\mathrm{B \rightarrow C}$ $\Delta H_{ii} = -\mathrm{ve}$ (iii) $\mathrm{C \rightarrow D}$ $\Delta H_{iii} = -\mathrm{ve}$. Which of the following graphs between potential energy (y-axis) vs reaction coordinate (x-axis) correctly represents the reaction profile of $\mathrm{A \rightarrow D}$?