A Physician Finds That a 16-Year-Old Male Patient,who Has a Very

A physician finds that a 16-year-old male patient,who has a very high-pitched voice and underdeveloped testes,has abnormally low levels of testosterone.What structure(s) might be the reason that this patient is producing such a low level of testosterone? 1. gonads
2) pituitary gland
3) adrenal gland
4) hypothalamus
5) thyroid gland

A) #1 only
B) #1 and #2 only
C) #1 and #2 and #3
D) #1 and #2 and #4
E) #1 and #3 and #5