The chart below lists the original and sale prices of items at a clothing store. Clothing Prices Original price Sale price $7.99 $5.59 $10.99 $7.69 $12.99 $9.09 $15.99 $11.19 $24.99 $17.49 $29.99 $20.99 Which statement best describes why the sale price is a function of the original price? As the original price increases, the sale price also increases. The sale price is always less than the original price. For every original price, there is exactly one sale price. The sales price is never less than zero.