Welche Farben hat die deutsche Flagge?

Why this is the correct answer

Germany's national flag consists of three horizontal stripes in black (top), red (middle), and gold (bottom). These colours trace back to the uniforms of the Lützow Free Corps during the Napoleonic Wars and were adopted by the Frankfurt Parliament in 1848 as a symbol of liberal German unity. After 1949, West Germany chose black-red-gold to distinguish itself from the red-white-black of the Nazi-era flag.