please do and explain

Question 3 (1 point) If the demand curve for reserves intersects the supply curve for reserves at the downward- sloping part of demand and vertical part of supply, what can the Fed do to increase the fed funds rate 0 Open market sale 0 Open market purchase 0 Decrease the reserve requirements 0 Increase the dicount rate Question 4 (1 point) Most of the banks in the US have a positive duration gap. When the interest rates dropped during the financial crisis, their capital must have.. 0 not changed 0 increased 0 decreased 0 impossible to determine