Answer:
correct option is a. $36,000
Step-by-step explanation:
given data 
labor cost = $360,000
move material per year = 600,000 pounds
to find out
material handling cost
solution
we find here first Labor Cost per pound of material that is express as 
Labor Cost per pound of material = Labor Cost ÷ Number of Pounds of material .......................1
Labor Cost per pound of material = 

Labor Cost per pound of material = $ .6 per pound of material 
=360000/600000= $0.6 per pound of material 
 so we can say that 60000 pounds are moved in March so cost will be 
60000 pounds are move cost = 60000 × $0.6 
60000 pounds are move cost = $36000 
so correct option is a. $36,000