The following labor standards have been established for aparticular product:Stan

The following labor standards have been established for aparticular product:Standard labor-hours per unit of output.. 4.0 hoursStandard labor rate.. $12.30 per hourThe following data pertain to operations concerning the product forthe last month:Actual hours worked.. 7100 hoursActual total labor cost.. $89105Actual output.. 1500What is the labor efficiency variance for the month?Choose one answer. a. $13805 U b. $15305 F c. $15305 U d.$13530 ULast year a company had stockholders equity of $160000 netoperating income of $16000 and sales of $100000. The turnover was0.5. The return on investment (ROI) was:Choose one answer. a. 7% b. 8% c. 10% d. 9%