The nurse in a family practice clinic is reviewing the patients scheduled for appointments.Which of these statements is true regarding routine laboratory testing in the following individuals? A) In pregnancy, no laboratory testing is needed unless problems with the pregnancy are suspected. B) In the elderly, laboratory values regarding cholesterol and triglycerides are the most important because of the risk of disease. C) Routine laboratory testing is not necessary during adolescence, except in cases of illness. D) Laboratory tests for iron and lead levels should be assessed at 9 to 12 months.