Answer :
The answer is C: Cloud computing is a service, and SaaS is a platform.
Cloud computing and SaaS are closely related terms, but are different. Cloud computing consist of infrastructure and services and can be described as the delivery of computer services like, storage, databases, servers, and more over the internet. On the other hand, SaaS can refer to as a software delivery model licensed differently to on-premise applications and provide users with access to a vendor’s cloud based web applications or software.