Which statement is true about Peristalsis?

• A.  The wearing out of colour on the parts of leaves due to lack of carbon dioxide and chlorophyll.
• B.  The process of breakdown of large food molecules into simpler molecules by the amylase enzyme.
• C.  The movement of food through alimentary canal by the wavelike movement controlled by involuntary muscles.
• D.  The process by which digested food is carried by the blood to different cells in the body.