Review the following scenario, then choose the appropriate response describing steps a paid tax preparer must take to demonstrate due diligence. Charlie (21) comes in to your office to have his tax return prepared. He states that he is a full-time college student with income from a part-time job, and his parents will not claim him as a dependent. He wants to claim the American Opportunity Tax Credit (AOTC). Which of the following describes an appropriate question to ask or action to take?