Your Text Describes Three Phases of the Female Hormonal Cycle $\rightarrow$

Your text describes three phases of the female hormonal cycle. Which of the following sequences CORRECTLY describes the order of events during the cycle?

A) progesterone is secreted $\rightarrow$ estrogen is produced $\rightarrow$ animal enters estrus
B) progesterone is secreted $\rightarrow$ animal enters estrus $\rightarrow$ estrogen is produced
C) estrogen is produced $\rightarrow$ progesterone is secreted $\rightarrow$ animal enters estrus
D) estrogen is produced $\rightarrow$ animal enters estrus $\rightarrow$ progesterone is secreted