Based on the year that Rich died and the year that Lucy is filing her taxes, the most favorable filing status is Married filing jointly.
Current tax laws are such that if a person loses a spouse in a certain year and does not remarry in that year, they can file in a joint manner with their now late spouse.
Rich died in 2020 and Lucy did not remarry. Lucy's 2020 returns can therefore be filed as a joint filing with Rich even though he is no longer alive.
In conclusion, the correct answer is option A.
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