Your 15-Year-Old Son Has Been What He Says Is 'Hormonal

Your 15-year-old son has been what he says is 'hormonal'. He realises that his emotions and feelings can be quite variable during this time of his life. What is the major difference in his hormone levels now than they were before puberty? His levels of testosterone are about

A) 8 times higher than before puberty.
B) 12 times higher than before puberty.
C) 16 times higher than before puberty.
D) 20 times higher than before puberty.