1. Mr. and Mrs. Dint filed their 2020 Form 1040 on January 28, 2021. Assuming that the return does not contain any significant errors, what is the latest date that the IRS can assess any additional 2020 tax?

a. December 31, 2024

b. April 15, 2024

c. December 31, 2023

d. January 28, 2024

2. Mr. and Mrs. Chung filed their unextended 2020 Form 1040 on May 30, 2021, and had no reasonable cause for the delinquency. The return showed a $10,479 balance of tax due. Compute the Chungs' late-filing and late-payment penalty.

a. $524

b. $1,048

c. $2,620

d. none of these choices are correct