Androgen binding protein which helps in concentrating testosterone in the seminiferous tubule, is secreted by

The figure given below depicts a diagrammatic sectional view of ovary. Which one set of three parts out of $\mathrm{I}-\mathrm{VI}$ are correctly identified?

Which one of the following is the correct matching of the events occurring during menstrual cycle?

Identify the hormones that are secreted in large amount prior to ovulation

A. $\mathrm{LH}$
B. $\mathrm{FSH}$
C. Estrogen
D. Progesterone

Following the diagram of an ovum surrounded by few sperms:

Which of the following option is correct for the labelled parts $\mathrm{A}, \mathrm{B}$ and $\mathrm{C}$ ?