Observe the figure and answer the following questions:

Identify the statements which are true for oogenesis. 

A. Large number of primary follicles degenerate during the phase from birth to puberty.
B. Antrum a fluid filled cavity surrounded by a new theca is seen in primary follicles.
C. At puberty only 6 × 10⁵ - 8 × 10⁵ primary follicles are left in each ovary.
D. Oogonia are formed in fetal ovary.

Choose the the correct answer from the options given below:

A and D only

The correct answer is Option (2) → A and D only