Please help me on the following questions please.

Suppose the Fed has decided to sell government securities using open market operations. The goal of this policy is to: '3' increase investment and aggregate supply. '3' decrease investment and aggregate supply. '3' increase investment and aggregate demand. '3' decrease investment and aggregate demand. Suppose an event has occured that has increased money supply. This will cause the equilibrium interest rate to: Multiple Choice O remain constant, but equilibrium quantity to decrease. O decrease, but equilibrium quantity to increase. O remain constant, but equilibrium quantity to increase. O decrease, but equilibrium quantity to remain constant