Exothermic and endothermic reactions — practice question

The energy level diagram for the reaction of $X_2(g)$ with $Y_2(g)$ to produce $XY$ gas is shown. Which statement is correct?

• AEnergy is released when $X_2$ and $Y_2$ bonds are broken.
• BEnergy is needed to form $XY$ bonds.
• CThe energy change, $\Delta H$, for the reaction is negative.
• DThe reaction is endothermic.