A network engineer is using the traditional switched hierarchical design. The client has asked to increase uplink utilization from the access layer to the distribution. How can the engineer attain this new requirement without adding new physical connections?

A network engineer is using the traditional switched hierarchical design. The client has asked to increase uplink utilization from the access layer to the distribution. How can the engineer attain this new requirement without adding new physical connections?
A . enable spanning-tree portfast
B . enable VSS at the distribution layer
C . increase the MTU size on the uplink interfaces
D . ensure the root bridge priority is equal on both distribution switches

Answer: B