Answer:
Option (A) is correct.
Explanation:
Standard variable overhead rate:
= variable manufacturing overhead costs ÷ machine hours per month
= $8,500 ÷ 1,000
= $8.5
Actual variable overhead rate:
= Spent in variable manufacturing costs ÷ machine hours used to make 80 connectors
= 5,700 ÷ 600
= $9.5
Variable overhead spending variance:
= (Standard variable overhead rate - Actual variable overhead rate) × Actual machine hour
= ($8.5 - $9.5) × 600
= -$1 × 600
= $600 Unfavorable