Secondbank would like to make a relatively small loan (50,000) to Kinkco, Inc. Secondbank is unwilling to make the loan without taking security interest in Kincko's bank account at Firstbank.

(a) How can Secondbank perfect its security interest? See UCC 9-102(a)(29); UCC 9-310(a); UCC 9-312(b); UCC 9-314(a); UCC 9-104; UCC 9-102(b); UCC 4-104(a)(5); Note (3) on Security Interests in Deposit Accounts, infra; Security Agreement 4.2 (Form 6.2, supra)