Which statement describes a Juniper Virtual Chassis Fabric?

Which statement describes a Juniper Virtual Chassis Fabric?
A . two or more QFX Series or EX Series switches in a daisy-chain topology
B . two or more QFX Series or EX Series switches in a ring topology
C . two or more QFX Series or EX Series linked in a spine-leaf topology
D . two or more QFX Series or EX Series switches in a full mesh topology

Answer: C