the guardian of a 5-month-old infant ask when and how to introduce solid foods. The NP explains that the guardian should begin offering solid foods. A. now, and then introduce a new food every other week B. now, and then introduce no more then three different foods each week C. when the infant is 6 months old. A new food should be introduced every 3 to 5 days D. when the infant is 6 months old. A new food should be introduced every other week