You have $325,000 invested in bond A which has a modified duration of 4.21 and $180,000 invested in bond B which has a modified duration of 13.54. If interest rates fall by 75 basis points, your portfolio would gain/lose approximately how much money?

Group of answer choices

lose $40,287.50

lose $28,540.88

gain $40,287.50

gain $28,540.88