The Wellness Clinic is considering a time-driven activity-based costing system. Given the following data: Resources Activities Time per Activity Supervision $ 60,000 Treating patients 1.40 hrs. Supplies and uniforms 80,000 Providing hygienic care 1.00 hrs. Salaries 350,000 Responding to requests 0.60 hrs. Computer 10,000 Monitoring patients 1.00 hrs. Monitor 25,000 Total $525,000 Total nursing hours (practical capacity) 15,000 What is the activity rate for responding to requests? a. $21 b. $35 c. $50 d. $25