What are two requirements for a fully functional vSphere HA cluster?

What are two requirements for a fully functional vSphere HA cluster? (Choose two.)

A.
vCenter installed or a vCenter Server Virtual Appliance (vCSA) deployed .

B.
Access to local storage for each host in the cluster.

C.
Static IP addresses entered in each hosts file in the cluster.

D.
A minimum of one VMkernel port per host.

Explanation:
http://www.lazywinadmin.com/2013/03/deploying-and-configuring-vcenter.html