In terms of the tax formula applicable to individual taxpayers, which of the following statements, if any, is correct?
a. In arriving at AGI, a taxpayer must elect between claiming deductions for AGI and deductions from AGI.
b. In arriving at taxable income, a taxpayer must elect between claiming deductions for AGI and deductions from AGI.
c. If a taxpayer has deductions for AGI, the standard deduction is not available.
d. In arriving at taxable income, a taxpayer must elect between deductions for AGI and the standard deduction.
e. None of these.