Which of the following is a true statement regarding in$-$substance defeasance of bonds?

A$.$ The government must place cash or other assets in an irrevocable trust sufficient to pay all future interest and principal payments for the debt being defeased.

B$.$ The government must agree to maintain sufficient cash and investment balances in its debt service fund to cover all interest and principal payments for the debt being defeased.

C$.$ The government must pledge to transfer amounts to an escrow agent prior to the due date for each interest and principal payment for the debt being defeased.

D$.$ The government must agree to maintain sufficient unrestricted cash and investments in its governmental funds to cover all interest and principal payments for the debt being defeased.