Electrons move at right angles to a magnetic field of `1.5xx10^(-2)` Tesla with a speed of `6xx10^(7)m//s`. If the specific charge of the electron is `1.7xx10^(11)C//kg`. The radius of the circular path will be
A. `2.9cm`
B. `3.9cm`
C. `2.35cm`
D. `3 cm`