OG18 721题求助，正确答案看着是run on sentence啊

Rosera

求助，正确答案选c，但是不明白为什么，因为主语是increases （in the sales），C前半句看着没问题，但是后半句没有连词，直接将剩余部分。求解

According to a recent study of consumer spending on prescription medications, increases in the sales of the 50 drugs that were advertised most heavily accounts for almost half of the $20.8 billion increase in drug spending last year, the remainder of which came from sales of the 9,850 prescription medicines that companies did not advertise or advertised very little.

A. heavily accounts for almost half of the $20.8 billion increase in drug spending last year, the remainder of which came

B. heavily were what accounted for almost half of the $20.8 billion increase in drug spending last year; the remainder of the increase coming

C. heavily accounted for almost half of the $20.8 billion increase in drug spending last year, the remainder of the increase coming

D. heavily, accounting for almost half of the $20.8 billion increase in drug spending last year, while the remainder of the increase came

       

E. heavily, which accounted for almost half of the $20.8 billion increase in drug spending last year, with the remainder of it coming

iamxixi9

不是run on sentence
是absolute phrase， n + ving 。  the remainder of the increase + coming....

mawencongsandy

楼上说的对。the remainder of the increase coming from是独立主格结构，the remainder是新主语，表示前面heavily accounted for的伴随状态。