Consider the reactions:
A → 2B ∆H₁
A → 3C ∆H₂
What is ∆H for the reaction 3C → 2B
A. 2×(∆H₁ + ∆H₂)
B. ∆H₂ - ∆H₁
C. ∆H₁ + ∆H₂
D. ∆H₁ - ∆H₂