Qì<span> or </span>ch'i<span> yup
yup yup
yup</span>
Even though is tru that the D. option is one of the characteristics of this type of music, The one that perfectly describes it is the C. option: It was performed with no instruments. This type of music is very similar to the gregorian musica and there is an absense of instruments.
I believe so because there were pieces like Gregorian chants.
