The Long Straight Wire in the Figure Carries a Current

The long straight wire in the figure carries a current I that is decreasing with time at a constant rate.The circular loops A,B,and C all lie in a plane containing the wire.The induced emf in each of the loops A,B,and C is such that

A) no emf is induced in any of the loops.
B) a counterclockwise emf is induced in all the loops.
C) loop A has a clockwise emf,loop B has no induced emf,and loop C has a counterclockwise emf.
D) loop A has a counter-clockwise emf,loop B has no induced emf,and loop C has a clockwise emf.
E) loop A has a counter-clockwise emf,loops B and C have clockwise emfs.

Correct Answer:

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