DS ^$\circ$ for a Reaction Can Be Calculated from the Following

DS ^$\circ$ for a reaction can be calculated from the following equation.

A) DS ^$\circ$ = (Smoles product) ×S ^$\circ$ _product - (Smoles reactant) ×S ^$\circ$ _reactant
B) DS ^$\circ$ = S(moles product × S ^$\circ$ _product) - S(moles reactant × S ^$\circ$ _reactant)
C) DS ^$\circ$ = S(moles reactant × S ^$\circ$ _reactant) - S(moles product × S ^$\circ$ _product)
D) DS ^$\circ$ = S(moles product × S ^$\circ$ _reactant) - S(moles reactant × S ^$\circ$ _product)
E) DS ^$\circ$ = S(moles product × S ^$\circ$ _product) + S(moles reactant × S ^$\circ$ _reactant)