Please answer mc question 1,2,3,4,and 5

many thanks

1. What is the primary problem that prevented digital cash from expanding before the development of blockchain technology? a. The lack of physical space to store all the digital transactions b. The vulnerability of digital cash to the double-spending problem C. The lack of trust of individuals to perform transactions using digital cash d. The disagreement among individuals on a consensus mechanism to verify transactions 2. What is the fundamental pricing problem associated with the value of cryptocurrencies such as bitcoins? a. The fact that cryptocurrencies are not physical money and hence cannot be priced correctly b. The limited supply of coins prevents fair pricing C. The absence of dividends creates a problem in applying the basic asset pricing formula d. The presence of convenience yield generates arbitrage opportunities resulting in mispricing 3. What ensures that the network will have incentives to verify pending transactions once the supply of bitcoins has reached the max (i.e., 21 million units), and hence miners cannot be rewarded with coins? a. Once all coin units are created, the specific cryptocurrency will stop working b. The verification process will change after all coin units are created C. Miners will continue to verify transactions, and payments will consist of transactions fees d. The supply of all cryptocurrencies is unlimited 4. Why are banks redundant in a simple Arrow-Debreu economy? a. Because markets are complete and hence financial markets can perform the same functions as banks b. Because interest rates are assumed to be the same across securities and hence there is no difference between market securities and deposits C. Because banks make zero profits, and hence they cannot survive in such an economy d. All of the above justifies the redundancy of banks in such an economy 5. Bank runs occur when many customers independently coordinate to withdraw their deposits to the extent that a bank might become insolvent. Which policy solution reduces ex-ante incentives of a bank run? a. Mandatory stress tests of banks b. Full or partial deposit insurance C. Suspending the possibility of withdrawing deposits (Suspension convertibility) d. None of the above is a policy that discourages bank runs