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11. Please briefly explain the contract contents of the 3-month zero coupon bond (zero coupon bond with a term of 6 months) forward contract. In your description, you must point out the functions of the underlying assets, principal, buyer, seller, term, maturity date and forward price. Then, please explain the trading purpose of the buyers and sellers of the 3-month zero coupon bond forward contract. 12. Please explain one by one which buyers and sellers of stocks, foreign currencies, government bonds, corporate bonds and forward contracts of these spot commodities face credit risk. 11. Please briefly explain the contract contents of the 3-month zero coupon bond (zero coupon bond with a term of 6 months) forward contract. In your description, you must point out the functions of the underlying assets, principal, buyer, seller, term, maturity date and forward price. Then, please explain the trading purpose of the buyers and sellers of the 3-month zero coupon bond forward contract. 12. Please explain one by one which buyers and sellers of stocks, foreign currencies, government bonds, corporate bonds and forward contracts of these spot commodities face credit risk