By default, each ESXi 6.x host is provisioned with a certificate from which root certificate authority?

A.
RedHat Certificate Authority

B.
VMware Certificate Authority

C.
DigiCert Certificate Authority

D.
Verisign Certificate Authority

Explanation:
In vSphere 6.0 and later, the VMware Certificate Authority (VMCA) provisions your environment with certificates. This includes machine SSL certificates for secure
connections, solution user certificates for authentication to vCenter Single Sign-On, and certificates for ESX hosts that are added to vCenter Server.
https://pubs.vmware.com/vsphere-60/index.jsp?topic=%2Fcom.vmware.vsphere.security.doc%2FGUID-3AF7757E-A30E-4EEC-8A41-
28DA72102520.html