A subordinated debenture differs from a senior debenture primarily in the priority of claims. Both are typically unsecured debt instruments, but subordinated debentures rank below senior debentures in the event of liquidation or bankruptcy. This means holders of senior debt are paid before holders of subordinated debt if the firm’s assets are distributed. Because subordinated debenture holders face greater default risk, they usually require a higher yield as compensation. This ranking feature is a key concept in capital market theory because the risk level of a security affects investor required return and the issuer’s cost of capital. Choice A is the opposite of the correct answer. Choice C is incorrect because a debenture is generally unsecured, and subordination does not mean collateral is provided. Choice D is unrelated to the distinction between the two instruments. Financial managers must understand debt priority because it influences financing choices, covenant design, investor demand, and interest cost. Therefore, B is correct because subordination means a lower claim on assets and cash flows relative to senior debtholders.

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