A nurse is preparing to administer vaccines to a 4-month-old Infant. Which of the following vaccines should the nurse plan to administer?

A. Rotavirus: The rotavirus vaccine is recommended for infants at 2, 4, and possibly 6 months of age, depending on the vaccine formulation. It helps protect against rotavirus, which can cause severe diarrhea and dehydration in infants. B. Measles, mumps, rubella (MMR): The MMR vaccine is not given until 12-15 months of age. It is not part of the vaccination schedule for a 4-month-old infant. C. Varicella (VAR): The varicella vaccine is typically administered at 12-15 months of age. It is not appropriate for a 4-month-old infant. D. Influenza: The influenza vaccine is recommended annually starting at 6 months of age. A 4-month-old is too young to receive the influenza vaccine.