Kara dies on December 7, 2020. An estate is created on her passing to administer her investments until they can be distributed to the various heirs that she has listed in her will. What is the due date of her estate trust tax return (not her personal final tax return, but the one for the trust) if her executor chooses the longest possible fiscal year that they are able? March 31, 2021 March 7, 2022 December 7, 2021 June 7, 2022