A nurse is teaching an assistive personnel to measure a newborn's respiratory rate. Which of the following statements indicates an understanding of why the respiratory rate should be counted for a complete minute?

A. While newborns may have incomplete lung expansion, this is not the primary reason for counting for a full minute. B. The rate and rhythm of breaths in newborns are irregular, so counting for a full minute ensures an accurate assessment. C. Activity can increase the respiratory rate, but this is true for all age groups and does not explain the need for a full minute count. D. Newborns are abdominal breathers, but this does not affect the need for a full minute count.