Question 38 of 40. Marcus is preparing a taxpayer's return. The taxpayer is claiming the Earned Income Credit (EIC), Child Tax Credit (CTC), Additional Child Tax Credit (ACTC), and the American Opportunity Tax Credit (AOTC). Which of the following best describes the actions Marcus must take to substantiate the taxpayer's eligibility for the credits? Complete Form 8867, Paid Preparer's Due Diligence Checklist, and keep a copy for the taxpayer's record, do not submit Form 8867 to the IRS. Ask additional questions but do not document the taxpayer’s answers to those questions. Complete all worksheets used to compute the credit and submit all worksheets to the IRS. Complete and submit Form 8867. Complete and keep all worksheets used to compute the credits. Ask additional questions and document the taxpayer’s answers. Retain a copy of documents provided by the taxpayer that were relied on when determining credit eligibility.