what request header can be explicitly specified in a request to Amazon S3 to encrypt object data when saved on the server side?

When uploading an object, what request header can be explicitly specified in a request to
Amazon S3 to encrypt object data when saved on the server side?

A.
x-amz-storage-class

B.
Content-MD5

C.
x-amz-security-token

D.
x-amz-server-side-encryption