Orpheus’s father was Apollo, and his mother was Calliope, one of the nine Muses.

What caused Orpheus' heart to beat faster and faster? A: He was joyful that he would once again be able to sing B: He was joyful that his father was Apollo C: He was joyful that his mother was Calliope D: He was joyful that he would once again be reunited with his love