Which statement is true about two-node vSAN cluster configuration?

Which statement is true about two-node vSAN cluster configuration?
A. Two-node configurations do not require a witness host appliance.
B. Only the ‘Ensure data accessibility’ option can be used when entering maintenance mode.
C. Two witness host appliances can be simultaneously used for redundancy.
D. When a host fails, vSAN rebuilds data on the other host to protect against another failure.