Marco first came to the United States with a tourist visa in 2013 when he was 12. He was authorized to remain for six months but he did not return to Mexico until 2015, when he was 14 years old. He then re-entered the United States without inspection on November 25, 2018. His LPR father petitioned for him and the priority date is now current. Which of the following statements is the most accurate? Select one: a. He started accruing unlawful presence when he returned to the United States EWI in 2018, but his prior entry and departure will not affect his inadmissibility. b. He is subject to the permanent bar because he accrued more than one year of unlawful presence and then departed and returned to the United States without inspection. c. He is barred for 10 years due to his prior unlawful presence, but he can file a waiver.