Suppose the cross-price elasticity of demand between goods x and y is 0.15 and the cross-price elasticity of demand between goods x and z is 1.3. Which of the following statements is true?
1) The demand for goods x and y is complementary
2) The demand for goods x and z is complementary
3) The demand for goods x and y is substitute
4) The demand for goods x and z is substitute
