______ , I think , and the problem could be settled.

A．Making great efforts

B．So long as you keep up your spirits

C．If you double your efforts

D．A bit more effort

某集团在短短几年时间里，通过收购兼并，形成医药、汽车、食品、酒业、饭店、农业，房产等几大产业并举的格局。请分析一下并购的动因是什么