Identify the hormones $A, B, C$ and $D$ from the graph by observing their concentrations in blood during the menstrual cycle of a female:

• A
  $A \rightarrow \text{FSH}, B \rightarrow \text{Progesterone}, C \rightarrow \text{Estrogen}, D \rightarrow \text{LH}$
• B
  $A \rightarrow \text{FSH}, B \rightarrow \text{Estrogen}, C \rightarrow \text{LH}, D \rightarrow \text{Progesterone}$
• C
  $A \rightarrow \text{FSH}, B \rightarrow \text{LH}, C \rightarrow \text{Progesterone}, D \rightarrow \text{Estrogen}$
• D
  $A \rightarrow \text{LH}, B \rightarrow \text{Estrogen}, C \rightarrow \text{Progesterone}, D \rightarrow \text{FSH}$