Calculate the magnetic induction at P, for the arrangement shown in figure, when two similar short magnets of magnetic moment M are joined at the middle. So that they are mutually perpendicular -
A. `(mu_(0))/(4pi)(Msqrt(3))/(d^(3))`
B. `(mu_(0))/(4pi)(2M)/(d^(3))`
C. `(mu_(0)Msqrt(5))/(4pid^(3))`
D. `(mu_(0)2M)/(4pid^(3))`