Refer to the exhibit.
How many services are seeded in the GAB port membership?
A. The GAB port membership has two nodes: 1 and 2.
B. The GAB port membership has three nodes: 0, 1, and 12.
C. The GAB port membership has one node: 1.
D. The GAB port membership has four nodes: 0, 1, 21, and 22.