Refer to the exhibit.

Which two configuration methods can be used to achieve this topology? (Choose two.)

A.
The core switches will automatically become the root bridges for the noted VLANs.

B.
Set the root priority on the aggregation switches to a lower value than that of the core switches.

C.
Manipulate the STP path priority for the noted VLANs on the desired ports.

D.
Setting the STP switch priority lower than the default value on the core switches for the noted VLANs.

Explanation: