According to its original plan. Stuart Consulting Services Company plans to charge its customers for service at $126 per hour. The company president expects consulting services provided to customers to reach 48,000 hours at that rate. The marketing manager. however, argues that actual results may range from 45.000 hours to 51,000 hours because of market uncertainty. Stuart's standard variable cost is $39 per hour, and its standard fixed cost is $1.420.000. Required Develop flexible budgets based on the assumptions of service levels at 45,000 hours, 48,000 hours, and 51,000 hours