The plane Y =O carries a uniform current density of -20 k $$\frac{mA}{m}$$ The magnetic field intensity at X =1,Y =10 and Z = —2 is

A

$$ -10 \hat{i} \frac{mA}{m}$$

B

$$ 10 \hat{i} \frac{mA}{m}$$

C

$$ - 20 \hat{i} \frac{mA}{m}$$

D

$$ 20 \hat{i} \frac{mA}{m}$$