There are 600 students at Hilda's school. She wants to estimate the number of students who ride their bikes to school. Which is the best strategy for Hilda to use? AO Survey 3 students, find out how many ride their bikes to school, then add 597 to that number. B. O Survey 30 students, find out how many ride their bikes to school, then multiply that number by 20. c. Survey 30 students, find out how many ride their bikes to school, then add 570 to that number. D. Survey 3 students, find out how many ride their bikes to school, then multiply that number by 200.​