Correct Answer: C
Option A is incorrect. On-Demand resource availability is a characteristic of Cloud computing.
Option B is incorrect. By adopting the Cloud, organizations only pay for the resources being used.
Option C is correct. Control on Infrastructure maintenance is not a characteristic of Cloud Computing as customers adopting PaaS and SaaS do not have this control.
Option D is incorrect. Resource pooling is the feature where Cloud resources are pooled for multiple customers. Hence, it has cost benefits. Resource Pooling is a characteristic of Cloud computing.
https://en.wikipedia.org/wiki/Cloud_computing