In early christian art, mosaics were a popular art form that used small, colored pieces of glass or stone. which statement best describes most of the early christian mosaics?

The statement would be ‘Mosaics picture stories from the Bible.’ These kinds of mosaics were created as early as the 4th century AD and mostly showed pictures from the Bible. Saints and kings started getting shown a bit later, but soon after the earliest ones. These can be found in cathedrals and churches like those in Ravenna.

i think it is d but idk