In this question, I don't understand how we use the indifference curves to figure out the demand function. Specifically, given the quantities of water park tickets, how do we determine their prices ? Do we look at the slope of the budget constraint ?

Use the following to answer question 12: Figure 5.7 Billiards (hours of play) 20- A 10- 8 - U21 103 0 2 34 6 8 10 12 14 16 18 20 Water park tickets12. (Figure 5.7) Based on the consumer's indifference curves and budget constraints, which of the following demand curves reflects the consumer's demand for water park tickets? Assume the consumer has income of $100. Demand curve A Demand curve B Price per water park ticket Price per water park ticket $30 - $30 25 20- 20- 10- 10. -D 5 . D 0 234 6 8 10 12 14 Water park 0 tickets 234 8 10 12 14 Water park tickets Demand curve C Demand curve D Price per water park ticket Price per water park ticket $30- $30- 24 - 20- 18 - 20- 16 - 10 10 9 5 - D TD 0 6 8 10 12 14 Water park 0 tickets 234 6 8 10 12 14 Water park A) Demand curve A tickets B) Demand curve B C) Demand curve C D) Demand curve D