A company is using an Amazon RDS DB instance for an application that is deployed in the AWS Cloud. The company needs regular patching of the operating system of the server where the DB instance runs.
What is the company's responsibility in this situation, according to the AWS shared responsibility model?

A. Open a support case to obtain administrative access to the server so that the company can patch the DB instance operating system.
B. Open a support case and request that AWS patch the DB instance operating system.
C. Use administrative access to the server, and apply the operating system patches during the regular maintenance window that is defined for the DB instance.
D. Establish a regular maintenance window that tells AWS when to patch the DB instance operating system.