GMAT Sentence Correction (SC) | Re: The relative prosperity of the first years of the twentieth

The relative prosperity of the first years of the twentieth century came to a halt in 1907 when drains on the moneysupply, revealing a weak national financial infrastructure of banking and credit, it precipitated an economic crisis that lasted nearly a year.

A. supply, revealing a weak national financial infrastructure of banking and credit, it precipitated.

B. Supply, revealing a weak national financial infrastructure of banking and credit, they precipitated.

C. Supply both revealed a weak