A Hiker Carries Drinking Water in a Cloth-Covered, Metal Container

A hiker carries drinking water in a cloth-covered, metal container called a canteen. During the summer, the hiker wets the cloth covering so that the water in the canteen stays cool. Which of the following statements explains why a wet covering keeps the water cool?

A) A wet covering transfers coolness to the water in the canteen.
B) A wet covering insulates the canteen better than a dry covering.
C) Evaporation of water from the covering transfers heat away from the canteen.
D) Condensation of water from the covering transfers heat away from the canteen.