A nurse is assessing a 6-month-old infant at a well-child visit. Which of the following findings should the nurse expect?

A. The pincer grasp, using the thumb and index finger, typically develops around 8–10 months, so it is not expected at 6 months. B. The posterior fontanel usually closes by 6–8 weeks of age, so a closed posterior fontanel is an expected finding in a 6-month-old infant. C. Lateral incisors generally erupt between 9–13 months, so they would not be expected at 6 months. D. Sitting steadily without support usually occurs around 7–8 months; at 6 months, infants may sit with support but not independently.