Which of the Following Is Not an Acceptable Way of Cooling

Which of the following is not an acceptable way of cooling a soup in a kitchen? (Choose all that apply.)

A) On a counter in a cool area of the restaurant until 40 °F is achieved
B) Adding a lot of ice until the temperature falls below 40 °F
C) Stirring the soup in an ice bath until it reaches 40 °F
D) In a refrigerator