During a 6-month-old's well child checkup, the nurse discusses introduction of solid foods into the infant's diet. Which foods should the nurse instruct the parents to delay introduction of until after one year of age due to potential allergy development?

A. Honey should be avoided in infants under 1 year due to the risk of botulism, but tomatoes and spinach are typically safe. B. Squash and pork are not common allergens, and tomatoes are usually introduced around 6 months. C. Strawberries, eggs, and wheat are common allergens and should be introduced cautiously after the first year of life to avoid the risk of an allergic reaction. D. Carrots and beets are not typically delayed due to allergies, but peanut butter may need to be introduced cautiously.