Please help me with 29 and 30

29. Issues that prevents bond index investability includes all of the following reasons except for A. the small size of certain bond issues in the index B. infrequent trading of certain bonds in the index C. the lack of liquidity in the market for on-the-run treasury bonds D. heterogeneity of bonds E. bond indices may have unexpected risk exposures 30. A credit default swap has all of the following characteristics except for: A. It can be used as a hedging instrument B. It is a contract that shifts credit exposure of an asset from one investor to another investor C. In the case of a credit event, the protection seller compensates the protection buyer for the investment loss D. The protection buyer makes regular swap premium payments to the protection seller E. All credit default swaps are standardized and traded on derivatives exchanges