Which of the Following Statements About the Tax Return Filing

Which of the following statements about the tax return filing process is false?

A) Every income tax return filed is checked for mathematical accuracy.
B) Every income tax return that was not prepared by a professional tax service is audited for errors in applying the tax law.
C) The information on a Form 1040 is cross-checked against information returns filed by the taxpayer's employer and other parties that paid income to the taxpayer during the year.
D) None of the above is false.