The VMware vCenter Server Appliance has been deployed using default settings. What user name and password are used to log in the administrator interface to configure the appliance?

A.
The initial user name and password must be supplied on the first login attempt

B.
The initial user name and password must be supplied during deployment

C.
The initial user name is root and the password is blank

D.
The initial user name is root and the password is vmware

Explanation:
Ref: Page 205 from vsphere-esxi-vcenter-server-50-installation-setup-guide.pdf

Download and Deploy the VMware vCenter Server Appliance
As an alternative to installing vCenter Server on a Windows machine, you can download the VMware vCenter Server Appliance. The vCenter Server Appliance is a preconfigured Linux-based virtual machine optimized for running vCenter Server and associated services.
The vCenter Server Appliance has the default user name root and password vmware.