964。 In a leveraged buyout, investors borrow huge sums of money to buy companies, hoping to pay off the debt by using the company’s earnings and to profit richly by the later resale of the companies or their divisions.

(A) by using the company’s earnings and to profit

(B) by using the companies’ earnings and by profiting

(C) using the companies’ earnings and profiting

(D) with the company’s earnings, profiting（E）

(E) with the companies’ earnings and to profit

答案是E， A错在哪里？ pay off the debt by / with怎么区分？ 各位NN给各解释吧！