91部的全称是什么？ What is the full name of the Part 91?

A.大型飞机公共航空运输承运人运行合格审定规则 Operating requirements: domestic, flag, and supplemental operations

B.一般运行和飞行规则 General Operating and Flight Rules

C.小型航空器商业运输运营人运行合格审定规则 Operating requirements: commuter and on demand operations and rules governing persons on board such aircraft

正确答案是2