Suppose you and your twin have different insurance plans. Your insurance plan has a fixed copay of $40 for each doctor's visit, but your twin's copay is 20% of the total cost. The local dentist charges $150 for a cleaning. Which of the following is most likely true?
a. You and your twin will visit the dentist the same number of times.
b. Your twin will switch insurance plans.
c. Your twin will visit the dentist more.
d. You will visit the dentist more.