The molar heat capacities of A, B and C are in the ratio 1:2:3. The enthalpy change for the reaction — Thermodynamics and Thermochemistry Chemistry Question

Question

The molar heat capacities of A, B and C are in the ratio 1:2:3. The enthalpy change for the reaction $\text{A} + \text{B} \to \text{C}$ at temperature $T_1$ is $\Delta H_1$. Assuming that the heat capacities do not change with temperature, the enthalpy change, $\Delta H_2$, at temperature, $T_2$ ($T_2 > T_1$) will be