Yeah the points are only 5
<span>Concerto grosso is a three-movement work orchestra with a group of featured instruments/players as opposed to concerto (solo concerto).
</span><span> This form of </span>baroque music consists of small group of soloists (the concertino) and full orchestra. The solo concerto on the other hand includes <span>a single solo instrument with the melody line and an orchestra. </span>
It's A, Monteverdi's Orpheus. : )
C: organum <span> type of music was created by the Norte Dame school of composers</span>