请教gwd 一道语法题

9-18 Unlike most other mergers in the utility industry ,which have been driven by the need to save money and extend companies'service areas ,the merger of nation's leading gas and electric company is intended to create a huge marketing network for the utilities in question with states opening their utility markets to competition.

E company and leading electric company is intended to create a huge network for marketing the utilites in question as states open 为什么是E 不是原文A 呢 谢谢