If a charged particle of charge `5 muC` and mass 5 g is moving with constant speed 5 m/s in a uniform magnetic field B on a curve `x^(2)+y^(2)=25`, where x and y are in meter. The value of magnetic field will be
A. 1 tesla
B. 1 kilo tesla along z-axis
C. 5 kilo tesla along the x-axis
D. 1 kilo tesla along any line in the x-y plane