Tax Drill $-$ Statute of Limitations

Indicate whether the following statements are "True" or "False" regarding the statute of limitations$.$

a$.$ If no return is filed or a fraudulent return is filed, assessments can be made at any time.

b$.$ If a taxpayer omits an amount of gross income in excess of $25$ percent of the gross income stated on the return, the statute of limitations does not apply.

c$.$ In general, any tax that is imposed must be assessed within three years of the later of $($a$)$ the filing date of the return or $($b$)$ the unextended due date of the return.

d$.$ The statute of limitations may be extended for a fixed period of time by mutual consent of the IRS and the taxpayer.