The diagram illustrates the demand curve for a product with unitary price elasticity. What will occur with this curve?
- AA fall in price will bring about an increase in expenditure on the product.
- BA fall in price will bring about an increase in sales but a fall in expenditure on the product.
- CAs the price rises, expenditure on the product stays the same.
- DAs the price rises, expenditure on the product rises and then falls.