Which coat of arms belongs to the Free State of Bavaria?

EDITORIAL LEARNING AID

Why is this answer correct?

Image 2 shows the Bavarian state coat of arms with its well-known fields such as the lion, the Franconian rake, the blue panther and the Swabian lions. The white and blue lozenges are the hallmark of Bavaria. Images 1, 3 and 4 show the coats of arms of other federal states and are therefore wrong.

Lozenges, lion, blue panther: Bavaria.

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