A client has had an unanticipated event which has depleted his emergency reserves. He needs an additional $$10,000$ and has to sell one of his municipal bonds. The following bonds have similar ratings and coupons. Which one would you advise the client to sell?

A$.$Board of Education bond $($GO$/$no insurance$).$

B$.$City infrastructure bond $($GO$/$no insurance$).$

C$.$Hospital bond $($revenue$/$no insurance$).$

D$.$Toll road bond $($revenue$/$MBIA$).$