6. ABC Bank transferred Melinda's mortgage to XYZ Bank effective on June 30. Melinda mistakenly sent her mortgage payment, due on July 10 to ABC Bank instead of XYZ Bank. XYZ Bank then noticed it had not received timely payment. According to the mortgage servicing rules, for how many days must XYZ Bank wait until it can consider Melinda's misdirected payment late? A. 15 days after June 30 B. 30 days after the payment due date C. 45 days after the payment due date D. 60 days after June 30