Mark is enlisted in the U.S. Army. On January 13, 2019 he entered a combat zone. He remained in the

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Mark is enlisted in the U.S. Army. On January 13, 2019 he entered a combat zone. He remained in the combat zone through April 2, 2018. What is the deadline for Mark to file his 2018 tax return? April 15, 2019. July 12, 2019. December 30, 2019. April 15, 2020.