Choose the best conclusion that can be drawn from the statement below: "The average age of students graduating from high school was 17 years, 8 months." A. Most students graduated when they were 17 years, 8 months of age. B. If a student was 18 years, 3 months of age, he didn't properly graduate. C. Students both younger and older than 17 years, 8 months of age graduated from high school. D. The curriculum in high school is not as difficult as it used to be