Suppose Lucy decided to start a lemonade stand in front of her house to earn some extra money. She made a sign advertising her lemonade for $1 per cup. Customers started coming by to buy her lemonade, and by the end of the day, she had earned $20. What can we infer about Lucy's pricing strategy?
Can we infer that "Lucy's pricing strategy was successful based on the amount of money she earned."? Yes, no, or maybe?