A nurse is caring for a 6-month-old infant. Which of the following findings indicates to the nurse that the infant may be experiencing pain?

A. A facial grimace is a common indicator of pain in infants and suggests discomfort, prompting further assessment. B. Dry palms and feet are not specific indicators of pain and can be influenced by other factors such as dehydration or environmental conditions. C. Wide-open eyes in an infant can occur for various reasons, including curiosity or surprise, and are not specifically indicative of pain. D. Decreased muscle tone can indicate various conditions, but it is not a direct sign of pain and may require further evaluation.