A parent calls the clinic 8 hours after their toddler received routine childhood immunizations. Which statement by the parent indicates an expected response?

A. "My child's lips look swollen, and there is a rash on the face.": Swelling of the lips and facial rash may indicate a serious allergic reaction or anaphylaxis, which is not an expected response after routine immunizations and requires immediate medical attention. B. "My child has continuous high-pitched crying that has lasted 4 hours.": Prolonged, inconsolable crying is an atypical response and could suggest severe pain, neurological irritability, or a rare adverse reaction to the vaccine, warranting urgent evaluation. C. "My child has a temperature of 100.4°F (38°C) and is more fussy than usual.": Mild fever and irritability are common, expected responses after immunizations. These reactions usually resolve within 24–48 hours and can be managed with comfort measures such as fluids, rest, and acetaminophen if advised by the provider. D. "My child is difficult to arouse and has not responded to stimulation.": Lethargy or unresponsiveness is an abnormal and potentially life-threatening response that requires immediate medical assessment. It is not an expected reaction to routine immunizations.