Which of the Following Is True About the Main Organs

Multiple Choice

Which of the following is true about the main organs of the digestive system?

A) They are involved in chemical digestion only, not mechanical digestion.
B) They do not produce the enzymes used in digestion; enzymes are produced by associate organs.
C) They form a tube through the body called the alimentary canal.
D) All of the above are true about the main organs of the digestion system.