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(a) Perfection by control. A security interest in investment property, deposit accounts, letter-of-credit rights, or electronic chattel paper may be perfected by control of the collateral under § 9–104, 9–105; 9–106, or 9–107.\n(b) Specified collateral: time of perfection by control; continuation of perfection. A security interest in deposit accounts, electronic chattel paper, or letter-of-credit rights is perfected by control under § 9–104, 9–105, or 9–107 when the secured party obtains control and remains perfected by control only while the secured party retains control.\n(c) Investment property: time of perfection by control; continuation of perfection. A security interest in investment property is perfected by control under § 9–106 from the time the secured party obtains control and remains perfected by control until:\n(1) the secured party does not have control; and\n(2) one of the following occurs:\n(A) if the collateral is a certificated security, the debtor has or acquires possession of the security certificate;\n(B) if the collateral is an uncertificated security, the issuer has registered or registers the debtor as the registered owner; or\n(C) if the collateral is a

possession of the security certificate;\n(B) if the collateral is an uncertificated security, the issuer has registered or registers the debtor as the registered owner; or\n(C) if the collateral is a security entitlement, the debtor is or becomes the entitlement holder.