The correct statement based on the graph below is:
  

1. The activation energy of the forward reaction is E1 + E2 and the product is less stable than reactant.
2. The activation energy of the forward reaction is E1 + E2 and the product is more stable than the reactant.
3. The activation energy of both forward and backward reaction is E+ E2 and reactant is more stable than the product.
4. The activation energy of the backward reaction is E1 and the product is more stable than reactant.