Answer: Option (C) is correct.
Explanation:
Given that,
In Dept. A,
Direct labor cost = $60,000
Manufacturing overhead = $90,000
Direct labor-hours = 6,000
Machine-hours = 2,000
In Dept. B,
Direct labor cost = $40,000
Manufacturing overhead = $45,000
Direct labor-hours = 9,000
Machine-hours = 15,000
Predetermined overhead rates in Dept. A = 
= 
= 150%
In dept. B = 
= 
= $3