[单选题]
A bar magnet falls th)rg)d : 3hw*iqkznfd+rough a54n oc gl6:gbw loop of wire with the north pole entering first. As tglgc6no: w4b 5he north pole enters the wire, the induced current will be (as viewed from above)
A. zero.
B. clockwise.
C. counterclockwise.
D. to top of loop.