An amphibian heart is shown in the diagram which statement best describes the three chambers of the heart?
a) Y receives oxygen-rich blood, X receives carbon dioxide-rich blood, and Z pumps blood
b) Z receives oxygen-rich blood, X receives carbon dioxide-rich blood and Y pumps blood
c) X receives oxygen-rich blood, Y receives carbon
dioxide-rich blood, and Z pumps blood
d) Y receives oxygen-rich blood, Z receives carbon dioxide-rich blood, and X pumps blood
PLEASE HELP ASAP