While the Most Common Biological Rhythms People Experience Are Circadian

Multiple Choice

While the most common biological rhythms people experience are circadian, humans:

A) also have some longer cycles that are about a month in length.
B) also have some shorter cycles that are about 90 minutes in length.
C) also experience both longer and shorter cycles.
D) experience some shorter cycles, but don't experience seasonal rhythms like some animals do.