Answer:
below
Explanation:
key signatures are important because they tell how how to play the music. For instance, in the key of C, it has no sharps or flats so you play all white keys. In the key of D, you have two sharps which are C and E. instead of playing the white notes for them you'd play the black.
The vault was ornamented with coffers. Some triumphal arches were surmounted by a statue or a currus triumphalis, a group of statues depicting the emperor or general in a quadriga. The inscriptions on Roman triumphal arches were works of art in themselves, with very finely cut, sometimes gilded letters.