What is an issue with this proposal?

A company requires AOS-Switches at the campus core. The switches:

✑ Will act as the default gateways for several campus VLANs

✑ Must provide redundancy for their services and tolerate the loss of a link or an entire switch

✑ Must recover from the failure of one of the switches within a second or less

VRRP and MSTP are proposed to meet these requirements.

What is an issue with this proposal?
A . VRRP provides redundancy against lost links but not a failed switch.
B . VRRP provides routing redundancy but not default gateway redundancy.
C . VRRP does not interoperate with MST
E . VRRP takes longer than a second to fail over.

Answer: D