Susan just got a promotion that increased her annual salary from $52,000 to $68,000. susan's monthly expenses included a mortgage payment of $1,500, three minimum credit card payments that total $350, a lease payment of $280, a student loan payment of $250, and a personal loan payment of $325. how did susan's debt-to-income ratio change with her promotion? a. susan's debt-to-income ratio decreased by about 2%. b. susan's debt-to-income ratio increased by about 2%. c. susan's debt-to-income ratio decreased by about 15%. d. susan's debt-to-income ratio increased by about 15%.