Which of the Following Statements Is Accurate According to Studies

Multiple Choice

Which of the following statements is accurate according to studies of internal desynchronization?

A) When people fly across several time zones, sleep and wake patterns take several days to return to normal.
B) When people fly across several time zones, temperature and hormone cycles can take several days to return to normal.
C) Melatonin pills have been shown to be effective in treating desynchronization.
D) When an occupation requires a rotating work schedule, then workers should be switched as frequently as possible.