5. A supermarket decides to reduce the price of its own brand of baked beans as a special offer for one week only. During this week, it discovers that its total revenue from the sale of own-brand baked beans increases. This indicates that (A) the demand for its own brand of baked beans is elastic with respect to price (B) the demand for its own brand of baked beans is elastic with respect to income (C) the demand for its own brand of baked beans is inelastic with respect to price (D) its own brand of baked beans is an inferior good