A nurse is obtaining the temperature of a newborn. Which of the following sites should the nurse use?

A. Tympanic thermometers are not recommended for newborns because the ear canal is difficult to assess accurately in this age group. B. Oral temperatures are not recommended for newborns due to the difficulty in ensuring accuracy. C. The axillary site is the recommended method for obtaining a newborn's temperature. It is safe and non-invasive. D. Rectal temperatures are accurate but are invasive and may cause discomfort or injury. It should only be used if other methods are not feasible.