Which two vCenter plug-ins are installed with a default vSphere Client installation? (Choose two.)

A.
vCenter Hardware Status

B.
VMware ESXi Service Status

C.
VMware vSphere Update Manager

D.
VMware vCenter Storage Monitoring Service

Explanation:
http://pubs.vmware.com/vsphere-51/topic/com.vmware.ICbase/PDF/vsphere-esxivcenter-server-51-host-management-guide.pdf(page 19, first para)