To keep the organ of the digestive system in good working condition, which of the following should you practice?

I. Eat slowly and chew the food thoroughly.
II. Eat your meal at regular time.
III. Swallow by whole the food you eat.
IV. Talk when your mouth is full.

A. I and II
B. I and IV
C. II and III
D. II and IV

with good answer po plss​