The following information relates to Global's manufacturing overhead data: Budgeted output units 11,250 units Budgeted machine-hours 22,500 hours Budgeted variable manufacturing overhead $213.750 Actual output units produced 11,500 units Actual machine-hours used 22,000 hours Actual variable manufacturing overhead costs $225,000 What is the variable manufacturing overhead rate variance? Select one: O a. $16,000 unfavorable Cross out cross out b. $9,500 favorable Cross out c. $11,250 unfavorable Cross out d. $11,250 favorable