Saved 2: Question 10 (3 points) The budget was based on production of 200 units, with 2 machine hours allowed per unit. Budgeted variable overhead per hour was $4. Actual production was 220 units using 420 machine hours. Actual variable costs were $3. Compute variable overhead spending variance 3: a) $510 V b) $510 F : c) $420 F d) $420 V 5