A Special Purpose Vehicle (SPV), also known as a Special Purpose Entity (SPE), is a separate legal entity created by a firm to isolate itself from financial risk. The firm transfers its assets to the SPV, thereby protecting itself from the financial risk associated with those assets. In the context of a derivatives transaction, if a specific counterparty defaults, the firm can still receive full settlement on its other transactions without having to net the losses on the defaulted transactions. This is because the assets are held by the SPV, which is legally separate from the firm. Therefore, the firm's financial risk is effectively isolated.

Choice A is incorrect. A Central Counterparty (CCP) is a financial institution that takes on counterparty credit risk between parties to a transaction and provides clearing and settlement services for trades in foreign exchange, securities, options, and derivative contracts. CCPs are not separate legal entities created by firms to transfer their assets for risk mitigation.

Choice B is incorrect. Initial Margins are collateral that the holder of a financial instrument has to deposit with a counterparty (most often their broker or an exchange) to cover some or all of the credit risk posed by the holder to the counterparty. This does not involve creating a separate legal entity for transferring assets.

Choice C is incorrect. A Derivative Product Company (DPC) is typically set up by large financial institutions in order to isolate certain types of operational risks associated with derivatives transactions, but it does not involve transferring assets into this entity as part of its risk mitigation strategy.