True or false

1. If the price elasticity of demand is unit-elastic, a 10 per cent increase in price will result in a 10 per cent increase in revenue.
2. When Julia raised the price of her homemade cookies, her total revenue increased. This suggests that the demand for Audrina's cookies is elastic.
3. Demand for staples such as dairy products and bread is likely to be both income and price inelastic.

If the cross-price elasticity of demand for goods A and B is zero, this means the two goods are unrelated