Lucas is 26 years old and lives in his parents' home with his four-year-old son, Noah

Lucas is 26 years old and lives in his parents' home with his four-year-old son, Noah. Noah's mother, Elle, has suffered from mental health issues since his birth and is unable to care for him. Lucas and Elle are not married. Lucas has a part-time job where he earns $7,500 per year. Most of his money goes to maintain his car, buy toys for his son, and pay for personal recreation. He does not pay rent, and his parents pay for all household costs, including food. What filing status will Lucas use to file his tax return?

Head of household.

Married filing jointly.

Married filing separately.

Single.