I have these questions and i would appreciate it if you could help me with the right answers and the explanations.

Note: intermediate macroeconomics chapter#24 (History of Macro Theory )

A)As the IS curve becomes flatter, we know that

1-a given change in the money supply will cause the same change in output.

2-a given change in the money supply will cause a smaller change in output.

B)The flatter is the IS curve,

1-the less effective is monetary policy.

2-the effectiveness of monetary policy does not change.