A particle P starts from the point z0=1+2i , i=−1 . It moves first horizontally away from origin by 5 units and then vertically away from origin by 3 units to reach a point z1 . From z1 , the particle moves 2 units in the direction of the vector i^+j^ and then it moves through an angle 2π in anti-clockwise direction on a circle with centre at origin, to reach a point z2 , then the point z2 is given by
a. 6+7i
b. −7+6i
c. 7+6i
d. −6+7i