If a Schedule C taxpayer does NOT bring documentation to prove their income, the Tax Professional __________.

a. Must be given other evidence that the self-employment income is accurate before completing and signing the return.

b. Cannot prepare the return.

c. May not claim Earned Income Tax Credit (EITC) on the taxpayer's return.

d. Should instruct the taxpayer to prepare a Form 1099-MISC to document their own income.d