Answer:
A) True
Step-by-step explanation:
The Malones should first read IRS publication 505 (2019), Tax Withholding and Estimated Tax. Then they should use the IRS Tax Withholding Estimator.
The IRS always recommends that everyone should use the Tax Withholding Estimator to avoid any unpleasant surprises, but I believe only a small percentage of taxpayers actually takes the time to use. When you are an employee, most of your tax withholdings are covered, but when you have income that is not subject to withholding, then it's a good idea to use this tool. It is always easier to pay your taxes in small installments, and not wait until the last day to pay a large lump sum.