Answer:
The correct answer is D.
Step-by-step explanation:
Giving the following information: 
The Thomlin Company estimates that total overhead for the current year will be $16,000,000 and that total machine hours will be 200,000 hours. 
Estimated manufacturing overhead rate= total estimated overhead costs for the period/ total amount of allocation base
Estimated manufacturing overhead rate= 16,000,000/200,000= $80 per machine hour