A rectangular loop of sides 10 cm and 5 cm carrying a current I of 12 A is placed in different orientation as shown in the figures below : If there is a uniform magnetic field of $0.3\;T$ in the positive z direction , in which orientations loop would be in (i) stable equilibrium and (ii) unstable equilibrium ?

Question

$\begin{array}{1 1} (a) \;and\;(c)\;respectively \\(b) \;and\;(d)\;respectively \\(b) \;and\;(c)\;respectively \\ (a) \;and\;(b)\;respectively \end{array} $