A rectangular loop of dimensions `(axxb)` carries a current i. A uniform magnetic field `vec(B)=B_(0) hat(i)` exists in space. Then :
A. Torque on the loop is `iabB_(0) sin theta`
B. Torque on the loop is in negative y-direction
C. If allowed to move the loop turn so as to increase `theta`
D. In allowed to move the loop turn so as to decrease `theta`
