_____ that's important is that you are doing your best and moving in the right direction. [ ]

A. One

B. All

C. Everything

D. Anything

如果“鱼和熊掌不可兼得”是不可改变的事实，则以下哪项也一定是事实

A．鱼可得但熊掌不可得

B．熊掌可得但鱼不可得

C．鱼和熊掌皆不可得

D．如果鱼不可得，则熊掌可得