Another factor behind the increase in merger activity is the record performance of stock market, which has enabled companies to finance major acquisitions ______ their inflated share prices.

Another factor behind the increase in merger activity is the record performance of stock market, which has enabled companies to finance major acquisitions ______ their inflated share prices.

A.for purposes of

B.on account of

C.on the strength of

D.prior to

正确答案是C