Glen (53) is unmarried. Glen's wife, Priscilla, died on June 26, 2018. For 2018, he filed a joint return. Glen's daughter, Mary Beth (19), lived with him for two months in 2019. Glen does not provide more than 50% of Mary Beth's support. Mary Beth is not a student. Glen's 2019 income consisted of $37,000 in wages and $2,500 in dividends.

What is Glen's correct and most favorable 2019 filing status