Please explain

1. A tax practitioner may charge a contingent fee for the preparation of: a) A tax return with a balance due of $25,000 or more b) A tax return filed by a non-resident alien c) A tax return filed in response to an IRS examination d) All of the above e) Never 2. Jessica files her 2018 Form 1040 on July 1, 2019. She did not file an extension. The tax status of limitations for this return expires on: a) April 15, 2022 b) July 1, 2022 c) July 1, 2026 d) The statute never expires for a late-filed return e) None of the above 3. Leo, a calendar year taxpayer, filed his 2014 individual income tax return on March 15, 2015, and attached a check for the balance of tax due as shown on the return. On June 15, 2015, Leo discovered that he had failed to include in his itemized deductions $1,000 of interest oh him home mortgage. In order for Leo to recover the tax that he would have saved by utilizing the $1,000 deduction, he must file an amended return no later than: a) December 31, 2017 b) March 15, 2018 c) April 15, 2018 d) June 15, 2018 4. Walt is self-employed. He travels from NYC to Japan on business. His time was spent as follows: 2 day travel (one day each way), 6 days business, and 2 days personal-sightseeing. His expenses were: Airfare $4,000 Lodging $300/day (not relevant on travel days) Meals $200/day Walt's deductible expenses are: a) $3,500 b) $4,500 c) $5,600 d) $6,400 e) none of the above 5. Marlene a cash basis taxpayer purchases a CD on July 1, 2016 for $10,000. The CD matures on June 30, 2018 and will pay $10,816, thus yielding a 4% annual return. How much income (if any) will she report on her 2016 and 2017 tax return? a) Nothing as all of interest is paid in 2018 b) 2016 = $200 ($10,000 x 0.04 x year) and 2017 = $408 (0.04($10,000 + 200)) c) 2016 = $816 and 2017 = $0 d) None of the above