50, how do you answer the following initial controller configuration question?

You have set up a port channel with the following configuration and assigned the channel group appropriately to your physical interfaces. The Layer 3 configuration for your network is:
interface vlan1
ip address 10.1.1.1 255.255.255.0
!
interface vlan2
ip address 10.2.2.1 255.255.255.0
!
interface vlan3
ip address 10.3.3.1 255.255.255.0

!
interface Port-channel31
switchport
switchport trunk encapsulation dot1q
switchport mode trunk
If the management interface has the IP address of 10.1.1.50, how do you answer the following initial controller configuration question?
Management Interface VLAN Identifier (0 = untagged):? Select the best response.

A.
0

B.
1

C.
2

D.
3