Circulating Red Blood Cells in Your Body Do Not Contain

Circulating red blood cells in your body do not contain a nucleus and other organelles. Are these cells living?

A) Yes, because they are actively metabolizing and once contained organelles.
B) Yes, because they are capable of moving throughout the body in the circulation.
C) No, because they do not contain a nucleus, they cannot be living.
D) No, because red blood cells do not actively metabolize.
E) No, because they are now only part of a once living cell.