[单选题]
A bar magnet falls through a loop of wi2 +szjw 97psiid84bnare with the north pole entering first 38qylq+69ax d6slta-y- xn pl. As the north pole enters the wire, the induced current will be (as viewed fr6 -+pyyn l 9a3l sx8q6adlt-xqom above)
A. zero.
B. clockwise.
C. counterclockwise.
D. to top of loop.
