Welche Farben hat die Landesflagge von Niedersachsen?

Why this is the correct answer

Lower Saxony's state flag uses the black, red, and gold colour scheme associated with Germany as a whole. Its coat of arms adds a white horse, the Niedersächsisches Pferd, which is a traditional symbol of the region. These three national colours on the flag link Lower Saxony visually to the German federal identity.