Which of the following are generally true ? Select one: a. Federal Reserve could inject money into commercial paper market, which is money market b. Federal Reserve has been purchasing corporate bond recently due to our pandemic c. Central banks hold treasury securities on their balance sheet. d. All of the above are true. e. only A and C of the above. Which of the following regarding treasury-bill auction is FALSE: Select one: a. the T-bill auction system in the US can be called as two bids, one price b. No single dealer or individuals is allowed to purchase more than 35% of any one issue of T-bills in order to keep the market highly competitive and fair. c. Only large institutions can participate in Treasury Bill Auctions d. Noncompetitive bids only allow for amounts that are less than 5 million