BioMed Pharmaceutical has held a patent on an important heart medication called Heartex, but the patent will expire in the coming year. After the patent expires, other firms can legally sell the same medication as a generic drug product. What will happens to the demand for Heartex and the firm's ability to mark up the price for this product as the generic drugs enter the market?
A. Demand becomes less elastic, the markup allowed as a percentage of price declines
B. Demand becomes more elastic, the markup allowed as a percentage of price increases
C. Demand becomes less elastic, the markup allowed as a percentage of price increases
D. Demand becomes more elastic, the markup allowed as a percentage of price declines