Two short magnets of equal dipole moments `M` are fastened perpendicularly at their centres (figure). The magnitude of the magnetic field at a distance `d` from the centre on the bisector of the right angle is
A. `(mu_(0))/(4pi)(M)/(d^(3))`
B. `(mu_(0))/(4pi)(Msqrt(2))/(d^(3))`
C. `(mu_(0))/(4pi)(2sqrt(2)M)/(d^(3))`
D. `(mu_(0))/(4pi)(2M)/(d^(3))`