Correct Answer - D
If wire other than straight wire, join initial and final ends of wire and the straight wire is effective wire
(i) if `vec(B) = Bhat(i), vec(F)_(m) = i(lambda hat(i) xx B hat(i)) = 0`
(ii) `vec(B) = Bhat(j), vec(F)_(m) = i(lambda hat(i) xx B hat(j)) = Bi lambda hat(k)`
(iii) `vec(B) = Bhat(k), vec(F)_(m) = i(lambda hat(i) xx B hat(k)) = Bi lambda hat(j)`