Your company designed a network to allow server VLANs in a data center to span all access switches. In the design, Layer 3 VLAN interfaces and HSRP are configured on the aggregation switches. In which three ways should the design of the STP domain be optimized for server and application performance?

Refer to the exhibit.

Your company designed a network to allow server VLANs in a data center to span all access switches. In the design, Layer 3 VLAN interfaces and HSRP are configured on the aggregation switches. In which three ways should the design of the STP domain be optimized for server and application performance? (Choose three.)
A . Use loop guard on access ports.
B . Use PortFast on access ports.
C . Use root guard on access ports.
D . Align Layer 2 and Layer 3 forwarding paths.
E . Use BPDU Skew Detection on access ports.
F . Explicitly determine root and backup root bridges.

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Answer: BDF