点P是函数f（x）＝cosωx（ω>0）的图象C的一个对称中心，若点P到图象C的对称轴的距离最小值是π，则函数f（x）的最小正周期是

A．π

B．2π

C．3π

D．4π

_____, Carolina couldn't get the door open.

A．Try as she might

B．As she might try

C．She might as try

D．Might she as try