Follicular phase is also called

Given below is a flow chart showing ovarian changes during the menstrual cycle. Fill in the spaces by providing the names of the hormones responsible for the events shown.
$\boxed{\text{Primary follicles}}$
$\downarrow \leftarrow \boxed{A}$
$\boxed{\text{Graafian follicle}}$
$\downarrow \leftarrow \boxed{B}$
$\boxed{\text{Ovum}}$
$\downarrow \leftarrow \boxed{C}$
$\boxed{\text{Corpus luteum}}$

In the menstrual cycle,the level of progesterone reaches its maximum in the . . . . . .

On which day of the menstrual cycle does ovulation occur?

Withdrawal of which of the following hormones is the immediate cause of menstruation?

$A$: Lack of menstruation may be indicative of pregnancy.
$R$: Menstruation only occurs if the released ovum is fertilised.