XYZ Company's variable overhead is applied using machine hours. SP for variable overhead is $10 per machine hour. Which of the following is the cause of an unfavorable variable overhead efficiency variance? Inefficiency in the use of overhead. Inefficiency in using machines. Inefficiency in using labor.. All of the above. None of the above. This information will be used for the next four questions. Excalibur bought 3,000 pounds of materials for $2,050. They used 2,800 pounds to produce 1,000 units of output. Direct labor costa totaled $10,000 for 600 hours of work. Standards have been set as follows: Direct Materials: 2 pounds & $1.10 per pound Direct Labor: .5 hours @ $32 per hour The materials price variance 131 05420 unfavorable 5420 favorable $450 un avorable $450 favorable 5230 favorable This is the same information as the prior question. Excalibur bought 3,000 pounds of materials for $2,850. They used 2,800 pounds to produce 1,000 units of output. Direct labor costs totaled $18,000 for 600 hours of work. Standards have been set as follows: Direct Materials: 2 pounds @ $1.10 per pound Direct Labor: .5 hours @ $32 per hour The materials efficiency variance is: S880 unfavorable $420 favorable O $1,100 unfavorable $450 favorable O S80 favorable This is the same information as the prior two questions. Excalibur bought 3,000 pounds of materials for $2,850. They used 2,800 pounds to produce 1,000 units of output. Direct labor costs totaled $18,000 for 600 hours of work. Standards have been set as follows: Direct Materials: 2 pounds @ $1.10 per pound .5 hours @ $32 per hour Direct Labor: The labor price variance is: $1,200 favorable $1,200 unfavorable $3,200 favorable 0 $3,200 unfavorable 52,000 un avorable This is the same information as the prior three questions. Excalibur bought 3,000 pounds of materials for $2,850. They used 2,800 pounds to produce 1,000 units of output. Direct labor coata totaled $18,000 for 600 hours of work. Standards have been set as follows: Direct Materials: 2 pounds @ $1.10 per pound .5 hours @ $32 per hour Direct Labor: The labor efficiency variance is: $1,200 favorable $1,200 unfavorable O $3,200 favorable $3,200 unfavorable $2,000 unfavorable