SX, SY and SZ show the supply curves for goods X, Y and Z. When the price of each of the three goods increases from $5 to $10, what are the values of their price elasticity of supply?
- Agood X equal to 1; good Y equal to 1; good Z equal to 1
- Bgood X equal to 1; good Y greater than 1; good Z greater than 1
- Cgood X less than 1; good Y equal to 1; good Z greater than 1
- Dgood X less than 1; good Y greater than 1; good Z greater than 1