Although the Most Common Biological Rhythms People Experience Are Circadian

Multiple Choice

Although the most common biological rhythms people experience are circadian:

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