Which statements about buildings and art from the middle ages and byzantine empire are true?
choose all answers that are correct.
a.
cathedrals, stained glass, and paintings were used as religious messages.
b.
cathedrals had "height and light" to make worshippers feel closer to the heavens or god.
c.
stained glass had pictures of people and scenes from the bible to teach people who couldn't read.
d.
the color gold in paintings was added to make them beautiful rather than as a symbol.