which uplink is used when a failover event occurs?

When an explicit failover order has not been configured on a virtual switch with multiple uplinks,

what determines which uplink is used when a failover event occurs?

A.
The first available uplink that reports a positive Link State

B.
The uplink with the shortest route

C.
The next available uplink on the list

D.
The reported uptime for the surviving uplinks

Explanation:
Networking Virtual Machines Jon Hall Technical Trainer, VMWORLD 2006, slide 27. Failover is implemented by the VMkernel based upon configurable parameters

1. Failover order: Explicit list of preferred links (uses highest-priority link which is up)
2. 1. Maintains load balancing configuration
2. Good if using a lower bandwidth standby NIC
3. Rolling failover — preferred uplink list sorted by uptime

The uplink with the shortest route – all uplinks are on the same network and so have the same route The next available uplink on the list has not been defined if explicit failover order is not selected