How can the NetScaler Administrator accomplish this with the least amount of administrative effort and without impacting connectivity through the gateway during the change?

Scenario: A XenDesktop Administrator just updated a StoreFront server to the X1 Receiver portal theme. The NetScaler Administrator would like to update the gateway to match StoreFront as closely as possible.

How can the NetScaler Administrator accomplish this with the least amount of administrative effort and without impacting connectivity through the gateway during the change?
A . Create a new gateway with the X1 theme.
B . Update the existing gateway by selecting the X1 theme from the global settings.
C . Create a new gateway with a customs theme to match StoreFront.
D . Update the existing gateway by building a custom theme to match StoreFront.

Answer: B