_____, I think, and the problem can be settled.

A．If you double your efforts

B．If you make greater efforts

C．If you spare no efforts

D．Some more efforts

交通部《道路货物运输及站场管理规定》对道路货物运输经营者、货运站经营者不具备开业要求的有关安全条件、存在重大运输安全隐患的是怎样处罚的？