Which of the Following Statements About the Timing and Variations

Multiple Choice

Which of the following statements about the timing and variations in puberty is true?

A) Two boys of the same chronological age will generally complete the pubertal sequence at the same time.
B) Menarche is considered within the normal range for girls if it appears between the ages of 9 and 15.
C) Genes have little to do with when and how puberty develops.
D) Weight of an individual is unrelated to pubertal onset.