Alvarado was charged and put on trial for murder. His attorney believed that Alvarado's confession should be thrown out because he had not been read his Miranda Rights. The trial court judge refused to grant this request; he ruled that Alvarado was not in custody at the time of the interview. Thanks to the evidence in his confession, Alvarado was convicted of second-degree murder. Why did the court allow Alvarado’s confession to be used as evidence?

He was not in custody at the time of the confession.
His parents were not been present when he confessed.
He had not asked to be read his Miranda rights.
He felt pressured into confessing his crime.