A nurse is teaching a parent of a 4-month-old infant who has developmental dysplasia of the hip and is prescribed a Pavlik harness. Which of the following instructions on the use of a Pavlik harness should the nurse include in the teaching?

A. Massaging the skin under the straps is crucial to prevent skin breakdown and irritation, which can occur due to constant pressure and friction from the harness. Regular, gentle massage helps to promote circulation and skin integrity. B. Using lotion under the harness is not recommended as it can trap moisture and contribute to skin irritation or breakdown. The area should remain dry and free from creams or oils to prevent fungal or bacterial infections. C. Adjusting the harness straps should only be done by the healthcare provider. Weekly adjustments by the parent can lead to improper positioning and reduce the effectiveness of the treatment, potentially causing harm to the infant’s hip development. D. Placing the diaper under the straps is the correct instruction. This ensures that the diaper does not interfere with the proper positioning and function of the harness, which is designed to keep the infant's hips in a flexed and abducted position.