A nurse is assessing a newborn who is breastfed and has a weight loss of 11% at 48 hr after birth.Which of the following findings should the nurse report to the provider?

Choice A rationaleMeconium stools are common in newborns and not a concern in the context of weight loss.Choice B rationaleDepressed fontanels can indicate dehydration in a newborn, which is critical, especially with significant weight loss.Choice C rationaleRust-stained urine is often due to urate crystals and is typical in newborns, not specifically alarming.Choice D rationaleOverlapping suture lines can be a normal finding in a newborn's head and not indicative of an acute problem relating to weight loss.