Question: Filter water using a charcoal filter.

  Options: 
 A. Instead of coffee grounds, use activated charcoal. Rinse the charcoal well before placing the charcoal in a coffee filter. Place the coffee filter into the coffee maker and proceed as if making coffee, instead it will be clean water.
 B. Place active charcoal in a pitcher. Fill the pitcher with water to be filtered. Place the pitcher int he sun and wait. After a few hours the water will be pure.
Answer: A