In December of this year, Al and Christina, a married couple, redeemed qualified Series EE U.S. Savings Bonds. The proceeds were used to help pay for their daughter's college tuition. Al and Christina received proceeds of $10,000 representing principal of $8,000 and interest of $2,000. The qualified higher educational expenses they paid this year totaled $7,500. Their AGI is for 2020 is $129,550. What is the amount of interest income Al and Christina can exclude from their income this year? A) $1,200 B) $1,440 C) $1,840 D) $2,000