Males in whom testes fail to descend into the scrotum are generally infertile. Why?

• A
  The scrotum provides a higher temperature than the body cavity.
• B
  The scrotum provides a lower temperature than the body cavity,which is essential for spermatogenesis.
• C
  The testes fail to produce testosterone when inside the body cavity.
• D
  The testes are damaged by the pressure of the abdominal cavity.