Evan's nightly chores include washing dishes. His father cooks everything he prepares a bit too long. Because of this, Evan spends a lot of sweat, effort, and time washing dishes. He sees a commercial on television that claims a new dishwashing detergent, called Brand X, cuts through grease better than its competitor, called Brand Y. They back up their claim with testimonials from people who say they've used this new detergent. What is a possible problem question or testable question that Evan might ask for this scenario?
A) How does Brand X affect the amount of grease that is cleaned off of a dish?
B) How does the amount of dishwashing detergent affect the amount of grease that is cleaned off of a dish?
C) How does the amount of dishes affect the amount of grease that is cleaned off of a dish?
D) How does the amount of cooking time affect the amount of dishes that need to be cleaned?