Observation of the four previous months has identified the following total cost data for production costs within Danny Dog plc. Activity level Total cost 10,000 17,500 40,000 55,000 60,000 80,000 30,000 42,500 Using the Hi-Low method of analysis, the variable production cost per unit has been established as 1.25. What is the total fixed production cost? a. 25,000 b. 20,000 C. 5,000 d. 15,000