Duke and his wife were legally divorced in 2021. After the divorce, Duke retained physical custody of their son. Duke received the following amounts from his ex-wife, on behalf of their son or as ordered by the court through a divorce decree: Court-ordered child support of $2,000 per month. Court-ordered alimony of $1,000 per month. How much of this income should be reported on Duke's federal return? $0 . $12,000 $24,000 $36,000