Which option is a benefit of using VSS?

A.
reduces cost

B.
simplifies configuration

C.
provides two independent supervisors with two different control planes

D.
removes the need for a First Hop Redundancy Protocol

Explanation:
First Hop Redundancy Protocols (FHRPs) such as VRRP and HSRP were designed to allow for a highly available first IP route hop for host systems. FHRPs allow
two (or more) distinct routers to share a common IP address providing a redundant Layer-3 default gateway for end nodes. The VSS system creates a single logical
router at Layer 3. This VSS routing instance fulfills this first- hop role without the need for a dedicated protocol. The VSS IP route is highly available due to MEC and
the resiliency of the VSS system. VSS eliminates the need for FHRP at the aggregation layer of the data center.

http://www.cisco.com/en/US/docs/solutions/Enterprise/Data_Center/vssdc_integrate.html