According to the Diagram Below, What Happens to the Four

Multiple Choice

According to the diagram below, what happens to the four atoms that begin the citric acid cycle in oxaloacetate?

A) All four atoms continue around the cycle over and over again.
B) Two of the atoms continue around the cycle a second time and two atoms are released from the cycle.
C) One of the atoms continues around the cycle a second time and three atoms are released from the cycle.
D) Three of the atoms continue around the cycle a second time and one atom is released from the cycle.
E) All four atoms are released from the cycle.