Section 9--341. Bank's Rights and Duties with Respect to Deposit Account. Except as otherwise provided in Section 9--340 (c), and unless the bank otherwise agrees in a signed record, a bank's rights and duties with respect to a deposit account maintained with the bank are not terminated, suspended, or modified by:

1. (a) the creation, attachment, or perfection of a security interest in the deposit account;
2. (b) the bank's knowledge of the security interest; or
3. (c) the bank's receipt of instructions from the secured party.