The Parent of an Adolescent Female Tells the Nurse,"I Am

The parent of an adolescent female tells the nurse,"I am concerned about my daughter's weight gain,but she doesn't look obese." Which response by the nurse is the most appropriate?

A) "If your daughter is 10% more than the ideal weight,she is morbidly obese."
B) "Teenage girls are often obese and should be monitored for excessive caloric intake."
C) "The ideal body weight fluctuates,depending upon gender,height,and general build."
D) "Your daughter's body mass index (BMI) should be calculated each month to determine obesity."