a service system has a rental cost of 2000 dollers per year, the operating cost is 5dollers per hour and the selling price is 7 dollers per hour. this system operates 8 hours per day, 5 days a week. if the selling price increased by 20%, the breakeven point will shift down by. O a. 37% O b. 41% $$ O c. 44% O d. 35% O e. 40%