A man walks a distance of 3 units from the origin towards the North-East (N45°E) direction. Form there, he walks a distance of 4 units towards the North-West (N45°W) direction to reach a point P. Then the position of P is the Argand plane is
a. 3eiπ/4 + 4i
b. (3 - 4i)eiπ/4
c. (4 + 3i)eiπ/4
d. (3 + 4i)eiπ/4