3. Age Classifier Write a program that asks the user to enter a person's age. The program should display a message indicating whether the person is an infant, a child, a teenager, or an adult. Following are the guidelines: . If the person is 1 year old or less, he or she is an infant. . If the person is older than 1 year, but younger than 13 years, he or she is a child. If the person is at least 13 years old, but less than 20 years old, he or she is a teenager. . If the person is at least 20 years old, he or she is an adult