Lenz's Law: in the Figure, Two Parallel Wires Carry Currents

Multiple Choice

Lenz's law: In the figure, two parallel wires carry currents of magnitude I in opposite directions. A rectangular loop is midway between the wires. The current I is decreasing with time. The induced current through the resistor R is

A) from a to b.
B) from b to a.
C) There is no induced current through the resistor.