Not yet answered Marked out of 2.00 8 From the following particulars, compute the Variable Overhead Efficiency Variance, standard output is units 6000 units, Actual Output in units 9000 units, standard labour hour is 12000 hours, Actual labour hour is 18000 Hours standard variable overheads are 4000 OMR and Actual :variable overheads are 7000 OMR Select one a. cannot calculate as data inadequate b. 10 c. 17 d. 9