Gaurav's Restaurant is analyzing an increase in its labour cost. You have been given the following information on the average hourly rate for its front-of-house positions and an excerpt from its budget and actual results for the month. Position Server Busser Host Position Required Server Busser Host Actual Total Cost $11,963 2,320 1,615 Average Rate $16.00 $15.00 $18.00 Hours Worked 725 160 95 Budget Total Cost $12,000 $2,250 $1,620 Hours Worked 750 150 90 a) Calculate the cost variance for each position. b) Calculate the quantity variance for each position. c) Calculate the total variance for each position.