The decision was made ________ more medical teams would be sent to help people in  the earthquake.

A．what

B．which

C．that

D．when

当讨论手动换档阀时，技师甲说选档杆和联动装置带动变速器内的手动换档阀；技师乙说手动换档阀位于阀体中，由节气门踏板间接带动。谁正确？（）

A、甲正确；

B、乙正确；

C、两人均正确；

D、两人均不正确。