As Shown in the Figure, a Battery Supplies a Steady $v$

Multiple Choice

As shown in the figure, a battery supplies a steady current to the solenoid on the left. The two solenoids are moving toward each other with speeds $v$ . The direction of the induced current through the resistor $R$ is

A) from $b$ to $a$ .
B) from $a$ to $b$ .
C) No current is induced.