单项选择题 The Charterers to have option of using Owners’ bunker contracts. This sentence indicates that（）.

单项选择题 The Charterer is entitled to the benefit of the excepted perils during the transit of the goods from storing place to the actual place of loading，provided such transit substantially （）part of the operation of loading.

单项选择题 The cesser clause mainly purports to relieve（）from paying demurrage.