Answer: Dollar rolls may involve receiving different securities in the second month, unlike repos where the same securities are repurchased.

## Explanation **Key Difference: Dollar Roll vs. Traditional Repo** A dollar roll transaction and a traditional repurchase agreement (repo) are both financing transactions, but they differ significantly in one key aspect: ### Traditional Repo: - Involves selling securities with an agreement to repurchase **the exact same securities** at a later date - The securities returned are **identical** to those originally sold - Commonly used for short-term financing and collateralized borrowing ### Dollar Roll: - May involve receiving **different securities** in the second leg of the transaction - The securities returned do not need to be the exact same certificates - Typically used in mortgage-backed securities (MBS) markets - Allows for substitution of "substantially identical" securities **Why Option C is Correct:** Option C accurately captures this fundamental difference - dollar rolls allow for receiving different (though similar) securities in the second month, while repos require repurchasing the exact same securities. **Why Other Options are Incorrect:** - **Option A**: Incorrect because this describes the basic structure that both dollar rolls and repos share - **Option B**: Incorrect because dollar rolls specifically allow for securities with different characteristics - **Option D**: Incorrect because both dollar rolls and repos typically involve interest considerations in the repurchase price This distinction is particularly important in mortgage-backed securities markets where dollar rolls are commonly used.

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