Plz answer will give 30 points and a brainliest if answered correctly. Which is a compound sentence?

A)For many years, Michael and Sergio marched together in the band.

B)For many years, Michael and Sergio marched together in the band.

C)Martina, who was in the band, enjoyed listening whenever she heard music on the radio.

D)Martina, who was in the band, enjoyed listening whenever she heard music on the radio.

Tanya played the trumpet quite well, but she preferred to sing.

Tanya played the trumpet quite well, but she preferred to sing.

Victor had a trumpet, a set of bagpipes, and a guitar.