Refer to the exhibit.

Which trusted infrastructure component is missing and represented by the area labeled “A”? (Choose the best answer.)

A. Key Management Server

B. vSphere Virtual Machine Encryption
C. Key Provider Service
D. Attestation Service

Reference:
https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.security.doc/GUID-CEFC9BAE-1685-49A7-9854-4AC997F2F1C3.html
https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.security.doc/GUID-E4945A3B-BCBE-42AD-A00F-6A6957217041.html