We opened the Greenville store on May 6. Since then, we have seen a steady increase in customer traffic. Efforts such as social media contests and book readings led to the increase. There was a 9.5 percent rise in customer visits. Our sales of nonfiction books were 5 percent higher. However, we offered discounts on nonfiction books. We also organized author readings. In addition, we showcased certain books. In particular, we advertised books that have been made into movies or television shows. What is the main idea of the first paragraph? A The Greenville store had 9,5 percent more customers in May. B. The Greenville store has had an increase in customers. The Greenville store has had book readings. D. The Greenville store used social media contests. E. The Greenville store opened on May 6.