What is the proper concentration for a chlorine solution used to sanitize food contact surfaces?
A. You Must use a capful of chlorine for every gallon of water. B. The concentration chlorine is not important. C. The concentration Must be between 50 and 100 parts per million,which can be measured with a chlorine paper test strip. D. The concentration Must be at 200 parts per million, which can bemeasured with a chlorine paper test strip.