The magnetic field vector of an electromagnetic wave is given by `B=B_(0)(hat(i)+hatj)/(sqrt(2))cos(kz-omegat)`, where `hati,hatj` represents unit vector along x and y - axis repectively .At t=0 s , two electric charges `q_(1)`of `4pi` coulomb and `q_(2)` of `2pi` coulmb located at `(0,0,(pi)/(k))and(0,0,(3pi)/(k))`, repectively ,have the same velocity of `0.5chati` ,(where c is the velocity of light ).The ratio of the force actig on charge `q_(1)` to `q_(2)` is :

Options

A. `2 :1`
B. `2sqrt(2):1`
C. `1:sqrt(2)`
D. `sqrt(2):1`