In the right-hand rule used for finding the direction of the induced current in a straight conductor moving in a magnetic field, which finger indicates the direction of the induced current?
a) Thumb → magnetic field, Forefinger → motion, Middle finger → current
b) Thumb → current, Forefinger → magnetic field, Middle finger → motion
c) Thumb → motion, Forefinger → current, Middle finger → magnetic field
d) Thumb → motion, Forefinger → magnetic field, Middle finger → current