5 years ago, A Millionaire bought $1,000,000 worth of 15 -yr municipal bonds with a coupon interest rate of 4%. Due to multiple interest rate raises during the past few years, the market interest rate becomes 6.09%. He considers selling his bonds and donate the sum of money to a foundation sponsoring Al researchIf the interest rate is locked into the market interest rate upon donation, how much research funding can be withdrawn from the foundation semi-annually to support Al research? Is selling the bonds a good idea