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The following are some parts of the human digestive system:
(i) Esophagus.
(ii) Stomach.
(iii) Small intestines.
(iv) Large intestines.
In which two parts does digestion of food take place?
A. (i) and (ii).
B. (ii) and (iii).
C. (iii) and (iv).
D. (i) and (iv)