The table lists some structures present in the human body. Which row gives the correct order of organisation, starting with the simplest structure and ending with the most complex?
- Ared blood cell → heart → heart muscle → circulatory system
- Bheart muscle → circulatory system → red blood cell → heart
- Cred blood cell → heart muscle → heart → circulatory system
- Dheart muscle → red blood cell → circulatory system → heart