D is corrent. The requirement is to identify the types of collateral that must involve filing a financing statement to perfect an interest. A financing statement must be filed to perfect an interest in inventory.
A is incorrect because filing a financing statement is not required to perfect an interest in this item; promissory notes are usually perfected by possession.
B is incorrect because filing a financing statement is not required to perfect an interest in this item; stock certificates may also be perfected by control or possession.
C is incorrect because filing a financing statement is not required to perfect an interest in this item; jewelry could also be perfected by possession.
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