TKOTC1235 Corporation uses a standard costing system in which variable manufacturing overhead is assigned to production on the basis of the number of machine hours. The following data pertain to one month's operations: Variable manufacturing overhead cost incurred: $74.200 Total(flexible budget) variable overhead variance: $5,000 favorable Standard machine hours allowed for actual production: 3.600 Actual machine hours incurred: 3,846 (ID#120514) Q.) What Is TKOTC1235's variable overhead efficiency variance? (if favorable variance, type just the number: if unfavorable variance, type a negative sign in front of the number (no space between); if no variance, type 0 (zero), as a number, not a word) -A.SI