I.【單選題】1-50 題，每題 1 分，共計 50 分。答錯 1 題倒扣 0.25 分，倒扣至本大題零分為止，未作答，不給分亦不扣分。1. If the amount of enzyme in a reaction with an initial G of -5 kcal/mole was doubled, what would the G be?
(A) -2.5 kcal/mole
(B) -5 kcal/mole
(C) -10 kcal/mole
(D) +5 kcal/mole
(E) +10 kcal/mole