John, a VMware Administrator, Is Connected Directly to an ESX

Multiple Choice

John, a VMware administrator, is connected directly to an ESX host using the vSphere client. He is trying to change the default interval that statistics are captured for. He is not able to do so. What is a possible reason for this?

A) John does not know the vpxuser password.
B) John is using the wrong version of the vSphere client.
C) The statistics in question can only be updated from the vCenter Server system.
D) John doesn't know where to find the settings.