[单选题]
A bar magnet falls through a loop1syfr8lb an xyn2j8 5) of wir-jyuxk+aklu4v. re4c)c;0 ro ;gd qv0e with the north pole entering first. As the north pole enters the wire, r;rogx vq 4)4y;k.cd+0u ejck-l0ua v the induced current will be (as viewed from above)
A. zero.
B. clockwise.
C. counterclockwise.
D. to top of loop.
