[問題]大全339

[bakekab]

339. If additional deposits of oil are found, it will expand the amount that can be used as fuel and reduce the price of oil, even if the deposits are not immediately tapped.
(A) it will expand the amount that can be used as fuel and reduce the price of oil
(B) the amount that is able to be used as fuel will expand and the price of oil be reduced
(C) it will cause an increase in the amount that is able to be used as fuel and a reduction in the price of oil
(D) the amount that can be used as fuel will increase and the price of oil will drop
(E) it will increase the amount of oil that can be used as fuel and cause a drop in the price

答案是D 不過請問一下

the amount that can be used as fuel will increase and the price of oil will drop 這句的結構是 S1+V1 and S2+V2 中間的and之前卻沒有逗號 這種句子不是run on 嗎??
請幫我看一下吧 感謝