Option (4) is the answer because, each primary follicle gets surrounded by more layers of granulosa cells and a new theca and are called secondary follicles. The secondary follicles soon transforms into a tertiary follicle which is characterised by a fluid filled cavity called antrum. The Graafian follicle now ruptures to release the secondary oocyte (ovum) from the ovary by the process called ovulation. So, the statement I is incorrect but statement II is correct.