Claudia,age 13,has Irregular Menstrual Cycles

Claudia,age 13,has irregular menstrual cycles.Her pediatrician tells her mother that Claudia is probably not ovulating at every cycle.What should Claudia and her mother know about this information?

A) This is expected in early development.
B) Claudia is atypical for her age; she should have regular cycles.
C) Claudia is atypical for her age; she should be ovulating at each cycle even if her cycles are irregular.
D) Claudia should see a specialist in adolescent physical development to see why she has these problems.