Cyclic Variations Refer to Changes in Concentration of Analytes That

Multiple Choice

Cyclic variations refer to changes in concentration of analytes that occur in a predictable manner.______ variation is a phrase used to describe reproducible variation that occurs during the course of a single day, and ______ variation is a phrase used to describe reproducible variation that occurs over a period of greater than one day.

A) circannual, circadian
B) circadian, infradian
C) infradian, circannual
D) circadian, circannual