A company is planning to move some of its on-premises resources to Azure. They have to provide a business justification for moving to Azure. They have to classify expenses as part of the business justification. Which category would the following expense come under? 
“Cooling expenses”

Answer options:

A.Primary Expenditure
B.Capital Expenditure
C.Secondary Expenditure
D.Operating Expenditure

Answer - D 
This expense comes under the operating expense category. 
The Microsoft documentation gives examples of operating expenses. 

Since this is clearly mentioned in the documentation, all other options are incorrect. 
For more information on financial models, please visit the below URL- 

https://docs.microsoft.com/en-us/azure/architecture/cloud-adoption/business-strategy/financial-models