1. A professional audit rm Charged juniors at $50 per hour, seniors at $200 per hour and the overhead rate for both was 100 per cent on direct labour. The rm added 5 per cent on total cost to arrive at a fee to he charged. If a job took 10 junior hours and 2 senior hours, what is the total cost? A. $800 B. $1090 C. $1800 I). $1800