During 2023, Robert Moore, who is 50 years old and unmarried, maintained his home in which he and his widowed father, age 75 , resided. His father had $3,750 interest income from a savings account and also received \$3,750 from Social Security during 2023. Robert provided 60% of his father's total support for 2023 . What is Robert's filing status for 2023 , and how many dependents should he claim on his tax return? Single and two dependents. Single and one dependent. Head of household and one dependent. Head of household and two dependents