Which of the following describes a properly controlled experiment? A. A poll is taken to determine the most popular website ever. B. Five radish seeds are planted in an outdoor garden that gets lots of sun and water. O C. Twenty mice are fed doughnuts every day and their weight is measured after two months. D. Fifteen turtles are fed iceberg lettuce and vitamins, while another fifteen turtles are fed only iceberg lettuce. answer for apex need answer asap