For a Chemical Reaction, Where the Internal Energy Is Given $\Delta$

For a chemical reaction, where the internal energy is given the symbol E,

A) E_final signifies the internal energy of the reactants.
B) E_initial signifies the internal energy of the products.
C) $\Delta$ E = E_products $\Delta$ E_reactants
D) $\Delta$ E is positive if energy is released to the surroundings.
E) $\Delta$ E is positive if energy is released by the chemical reaction.