Which of the Following Statements Is True

Multiple Choice

Which of the following statements is true?

A) Mechanical digestion only occurs in the mouth; chemical digestion only occurs in the stomach.
B) Mechanical and chemical digestion both occur in the mouth and in the stomach.
C) Mechanical digestion only occurs in the stomach; chemical digestion only occurs in the mouth.
D) Mechanical and chemical digestion occur in the mouth; chemical digestion,but not mechanical digestion,occurs in the stomach.