It appears that the examiner has got somewhat confused here.

The front end of the RMI Pointer indicates the QDM to the VOR, which is the Magnetic Bearing TO the station.

The QDM is also the Radial (QDR) plus 180º.

Therefore, either (b) or (c) could be correct.

The Radial (QDR) is the Magnetic Bearing FROM the station.

If this question comes up, please select "Radial plus 180º" but appeal it and be sure to let us know.