Pam pays the following interest expenses during the year: Home mortgage interest on her personal residence - $6,500; Credit card interest on her personal purchases - 550; Interest on loans used to purchase investments - $5,400 (Net investment income is $2,000, and interest on loans used to finance tax-exempt investments is 2,600); Interest on loans used for a business conducted as a sole proprietorship - $3,800; Interest on a credit card used exclusively in the business - $470. What is the amount of interest expense that can be deducted as an itemized deduction for this year? $11,900 $9,300 $12,300 $13,570