• Aurora and Oscar separated in 2017 and divorced in October 2019. She earned $40,000 in wages and paid more than half the cost of keeping up her home in 2019.
• Aurora and Oscar have a son, Milo, who is 17 years old and unmarried.
• Aurora signed Form 8332 (Release/Revocation of Release of Claim to Exemption for Child by Custodial Parent) allowing Oscar to claim Milo in 2019.
• Milo is a full-time student working towards a degree in computer information systems. Milo lived on campus during the school year and spent the summer at home with his mother.
• Milo does not a have a felony drug conviction and is not a qualifying child for anyone except Aurora.
• Aurora paid $5,000 of Milo's tuition that was not covered by his scholarship.
• Aurora provided more than half of her son's support and all the cost of his room and board on campus.
• Milo's only income was $3,800 in wages and $400 of dividend income. He had no federal or state tax withholding.
• Aurora and Milo are U.S. citizens and have valid Social Security numbers

Question: Milo is Oscar's qualifying person for which of the following?

a. Head of Household filing status

b. Earned income credit

c. Credit for other dependents

d. Child Tax credit