How many different VRFs are required?

Refer to the exhibit and the following connectivity requirements. How many different VRFs are required? Sites CK1 A, CK1 B, CK1 C, and CK1 D require connectivity among them. Sites CK2 A and CK2 B reqire connectivity between them. Site CK1 2A requires connectivity to sites CK1 A, CK1 B, CK1 C, CK1 D, and CK1 2B. Site CK1 2B requiresconnectivity to sites CK2 A, CK2 B, and CK1 2A.

A.
2 VRFs

B.
3 VRFs

C.
4 VRFs

D.
6 VRFs

E.
8 VRFs

F.
10 VRFs