Which of the following is true about the child-women ratio

• A. 0-4 years of children and 15-45 years of unmarried women
• B. 0-5 years of children and 15-49 years of age of married women
• C. 0-4 years of children and 15-44 years of all women
• D. 0-4 years of children and 20-30 years of married women