When do both $LH$ and $FSH$ attain peak levels in the menstrual cycle?

The withdrawal of which hormone causes immediate menstruation?

If in a normal menstruating woman,menses occur on $5^{\text{th}}$ April,what will be the expected date of ovulation?

Changes in $GnRH$ pulse frequency in females are controlled by circulating levels of

Which of the following statements is correct?

The following graph shows the relative concentrations of the four hormones present in the blood plasma of a woman during her menstrual cycle. Identify the hormones $A, B, C$ and $D$.