Refer to the information provided in Figure 3.6 below to answer the question(s) that follow.
Refer to Figure 3.6. The number of DVDs Isabel rents per week decreases from 7 to 4. This is caused by
◦ a decrease in income if DVDs are a normal good.
◦ an increase in the price of popcorn which is a complement to DVDs.
◦ an increase in the rental price of DVDs.
◦ a decrease in the cable price of pay-per-view movies.