The correct option is B Leydig's cells
Testosterone is secreted from the interstitial cells of Leydig.
Sertoli cells produce and secrete the peptide hormone inhibin B into the circulation as a response to FSH stimulation.
The hypothalamus sends a signal (Gonadotropin releasing hormone- GnRH) to the pituitary gland to release the gonadotropins - Follicle stimulating hormone (FSH) and luteinising hormone (LH). Luteinizing hormone (LH) stimulates the Leydig cell to produce testosterone.
The prostate gland secrete an alkaline fluid consisting of some proteolytic enzymes that comprises approximately 20-30 % of the seminal plasma.