Elasticity of Supply and Demand

The shape of an elastic supply curve:

the P of water goes up by 20% and the Q goes down by 10%. Water is:

the P of apples goes up 18% and the Q goes down by 18%. Apples are:

The shape of an elastic demand curve

Which of these products is the most INELASTIC?

The shape of a perfectly inelastic demand curve

The shape of a unit elastic supply curve:

Banjos.com raises its price from $100 to $110. Sales drop from 100 to 25. Banjos are