A long, vertical, straight wire carries a current I. The wire is perpendicular to the plane of

Question:

A long, vertical, straight wire carries a current I. The wire is perpendicular to the plane of a circular metal loop and passes through the center of the loop (see the drawing). The loop is allowed to fall and maintains its orientation with respect to the straight wire while doing so. In what direction does the current induced in the loop flow?
(a) There is no induced current.
(b) It is flowing around the loop from A to B to C to A.
(c) It is flowing around the loop from C to B to A to C.