4. A researcher has collected data on families with 3 children. families with 4 children, and families with 5 children. Each family is given a code, reflecting the number, gender, and birth order of the children. For example, the code MMMF is given to a family with 4 children where the first 3 children born are boys and the youngest child is a girl. How many different codes are required in this study? A. 32 B. 56 C. 150 D. 4096