What does Paragraph 3 mainly discuss?A. Different
已帮助 人
What does Paragraph 3 mainly discuss?
A. Different effects of caffeinated coffee and decaf on sleep.
B. Different findings of Lotan Shilo and a team about caffeine.
C. The fact that the subjects slept 415 minutes per night after drinking decaf.
D. The evidence that the subjects took half an hour to fall asleep.