Gwen and Her Brother Henry Produce Roughly the Same Levels

Multiple Choice

Gwen and her brother Henry produce roughly the same levels of male hormones and female hormones. Given this information, it is likely that:

A) Gwen and Henry have not yet reached puberty.
B) Gwen has reached puberty but Henry has not.
C) Henry has reached puberty but Gwen has not.
D) Gwen and Henry have both reached puberty.