Jill is the manager of Music Mayhem and is keen to better understand the sales at her store. In order to do this Jill records the price of guitars and the amount sold across the year. In January, at a price of $200 per guitar, 3 guitars are sold daily. In July at the same price, 5 guitars are sold. In September, at the same price, 8 guitars are sold daily. Which of the following statements are true: [7 From January to July, Jill experiences a decrease in revenue. C] From January to July, there has been a decrease in the quantity demanded due to a change in consumer preferences. [7 From July to September there has been a decrease in demand. C] From July to September there has been an increase in demand