Can someone please help me answer this? Thank you

After reviewing the case studies (Amazon Web Services Overview of Security Processes, Cloud Computing - Security Planning Guide & Navigating Security in the Cloud) answer

(A) Cloud computing is rapidly moving into the mainstream. What are the benefits and do you insure security needs are being met and

(B) what are benefits, tools & techniques of Amazon Web Services Security Processes and

(C) how do you build security in the Cloud from the ground up?