Questions 14 to 17 are based on the following passage. At the end of the passage, you will be given 20 seconds to answer the questions. Now listen to the passage. According to the speaker, why did artists want to produce work for calendars
A．To let many people see their works. B．To earn money from the sale of calendars. C．To portray the cruelty of hunting. D．To create gifts for people who bought their paintings.