Which reference source is a combination of two official compendia?

Which of the following medications is an example of a xanthine derivative?

theophylline salmeterol terbutaline epinephrine

You are assessing a 4-year-old child with a fever and cough. The child is very calm and receptive to your presence. Given this, which action would be most appropriate during your ongoing assessment?

A) Ask the mother to leave until the assessment is complete B) Take the child to the ambulance for assessment C) Have the mother remain with the child for the assessment D) Refrain from touching the patient until in the ambulance