问下OG12的第六题阿~~求高手

In late 1997,the chambers inside the pyramid of the Pharaoh Menkaure at Giza were closed tovisitors for cleaning and repair due to moisture exhaled by tourists, which raised itshumidity to such levels so that salt from the stonewas crystallizing and fungus wasgrowing on the walls.

(A) due to moisture exhaled by tourists, which raisedits humidity to such levels so that salt from the stone was crystallizing

(B) due to moisture that tourists had exhaled, therebyraising its humidity to such levels that salt from the stone would crystallize

(C) because tourists were exhaling moisture, which hadraised the humidity within them to levels such that salt from the stone wouldcrystallize

(D) because of moisture that was exhaled by touristsraising the humidity within them to levels so high as to make the salt from thestone crystallize

(E)because moisture exhaled by tourists had raised the humidity within them tosuch levels that salt from the stone was crystallizing
选E 答案，有个疑问 人呼出呼出湿气和  湿气升高 及 moisture exhaled by tourists 和had raised the humidity
应改是 先呼出湿气再 湿度升高 ， 但是这里 一个用过去式一个过去完成时 及表示过 湿度升高发生在前是不是有错误、