Question: how to clean out a peanut butter jar

  Options: 
 A. Scrape out as much peanut butter as you can, then fill the jar about one-fourth full with water. Add a drop of dish detergent, with the top off shake vigorously. Dump out the contents and the jar should be clean enough to recycle
 B. Scrape out as much peanut butter as you can, then fill the jar about one-fourth full with water. Add a drop of dish detergent, put on the top and shake vigorously. Dump out the contents and the jar should be clean enough to recycle
Answer: B