which design recommendation should be followed?

When designing a layer 2 STP-based LAN with Layer 3 FHRP, which design recommendation should be followed?

A.
Avoid modifying default STP and FHRP timers.

B.
Assign the native VLAN to the lowest number in use

C.
Avoid configuring router preemption

D.
Align the STP root with the active FHRP device