This is a test of commonsense with single/multi-choices. Complete the next sentence:

How to feel full longer
Eat slowly.
Before you even start a meal, one way to make you feel more satisfied and stay satisfied may be by regulating the speed at which you eat. Some studies show that slower you eat, the more satisfied you'll feel.

OPTIONS:
(A). If you eat more slowly, you'll feel fuller longer. Eat a smaller amount at the beginning, and stay slow at the end..
(B). Not only does this result in higher energy levels in the body, this extra intake of energy makes you feel fuller longer. If you're not afraid to eat, just do it slowly..
(C). Keeping a slower pace won't really help make you feel full longer, but may help you live longer. Slow-eating can help you become hungry quicker, which can help you feel less full..
(D). It's recommended to take about 20-30 minutes to eat each meal. This slow pace may help your brain register being satisfied with your meal..
The answer is:
(D).