Which coat of arms belongs to the federal state of Mecklenburg-Vorpommern?

EDITORIAL LEARNING AID

Why is this answer correct?

The coat of arms of Mecklenburg-Vorpommern shows the black bull's head for Mecklenburg and the red griffin for Western Pomerania. Image 3 shows this coat of arms; the other images show coats of arms of other states and are therefore wrong.

MV: bull's head for Mecklenburg, griffin for Western Pomerania.

This translation and explanation are editorial learning aids. The official German wording and answer key govern the examination.