The rightward shift of AD results in an increase in GDP and price level. An increase in aggregate demand increases the price level. If the answer merely has correct assertions the score is capped at 1. 1 point Country Y reflects the monetarists' description of the economy.
Monetarists believe that the demand for money is interest inelastic.
1 point - winner take all. In other cases, use the holistic approach. Besides counting points, the answer may be looked at as a whole and ultimately judged by its overall quality. This is particularly true if the total point count includes a half. The final total should mean something in terms of the overall quality of the answer.