Use the information to answer the following question. Students are trying to calculate the heat of reaction for the following target reaction.
A + 3B → 3C + 2D
They find the heat of reactions for the two reactions as shown.
A + 2B → C + D ΔH= -20 kJ

B → 2C + D ΔH= -45 kJ

When the students used Hess’s Law correctly, what is the heat of reaction for the target reaction?

A.
+65 kJ

B.
+25 kJ

C.
-65 kJ

D.
-25 kJ