Ms. Ruang, a single taxpayer, purchased her principal residence on August 19, 2018 and financed the purchase with a mortgage secured by the residence. In 2018, the average balance of the mortgage was $817,000, and Ms. Ruang paid $35,000 of mortgage interest. How much of this interest is an itemized deduction?

$0

$20,270

$32,130

$35,000