(a) Exercise of recoupment or setoff. - Except as otherwise provided in subsection (c) of this section, a bank with which a deposit account is maintained may exercise any right of recoupment or setoff against a secured party that holds a security interest in the deposit account.
(b) Recoupment or setoff not affected by security interest. - Except as otherwise provided in subsection (c) of this section, the application of this Article to a security interest in a deposit account does not affect a right of recoupment or setoff of the secured party as to a deposit account maintained with the secured party.
(c) When setoff ineffective. - The exercise by a bank of a setoff against a deposit account is ineffective against a secured party that holds a security interest in the deposit account which is perfected by control under G.S. 25-9-104(a)(3), if the setoff is based on a claim against the debtor.