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　　How does the credit exposure of a long OTC put option on XYZ stock change when the stock price decreases?
　　A. Increases
　　B. Decreases
　　C. Doesn't vary with underlying stock price
　　D. There is no credit exposure on long options
　　Answer:A
　　Credit exposure from long positions in OTC options, assuming that the credit quality of the counterparty remains constant, is driven by the level ofthe contingent future liability, i.e. the larger the expected future claim against the counterparty the larger the credit risk.
　　The value ofthe put at expiration is defined as max(X-S，的where X = strike price and S = spot price. There are， a long put option increases in value as the stock price decreases. Thus, the expected liability of our counterparty is increased (choice A).