For each of the following pairs of goods, identify the one that you would expect to have the higher price elasticity of demand and explain your choice by referring to at least one of the determinants of elasticity. There may not necessarily always be a "correct" answer. It may depend upon your viewpoint and reasoning. 

1. Heineken beer vs beer 

2. A prescription tablet to reduce blood pressure vs a tablet to reduce headache pain 

3. Milk vs orange juice 

4. A motor car vs a daily newspaper