The economy is in the horizontal portion of the AS curve, there is no liquidity trap and investment is sensitive to changes in the interest rate. According to the Keynesian transmission mechanism, if the money supply increases the interest rate will _____ investment spending will the AD curve will shift to the and Real GDP will 1) fall; rise; left; rise 2) fall; fall; left; fall 3) fall; rise: right; fall 4) rise; rise; right; rise 5) fall; rise; right; not change