question_answer

The point represented by the complex number 2 - i is rotated about origin through an angle \[\frac{\pi }{2}\] in the clockwise direction, the new position of point is

A)  \[1+2i~\]                    

B)  \[-1-\text{ }2i~\]     

C)  \[2+\text{i}~\]            

D)  \[-1+2i\]