Miramar Industries manufactures two products, A and B. The manufacturing operation involves three overhead activities - production setup, material handling, and general factory activities. Miramar uses activity-based costing to allocate overhead to products. An activity analysis of the overhead revealed the following estimated costs and activity bases for these activities:

Activity Cost Activity Base
Production Setup $250,000 Number of setups
Material Handling $150,000 Number of parts
General Overhead $80,000 Number of direct labor hours

Each productâs total activity in each of the three areas are as follows:

Product A Product B
Number of setups 100 300
Number of parts 40,000 20,000
Number of direct labor hours 9,000 12,000
What is the activity rate for General Overhead?
A. $4.00 per direct labor hour
B. $3.81 per direct labor hour
C. $6.71 per direct labor hour
D. $4.20 per direct labor hour