Please match the Cisco STP enahancement term to its definition.

Please match the Cisco STP enahancement term to its definition.(Not all options will be used.)
(1) BPDU guard
(2) PortFast
(3) BackboneFast
(4) UplinkFast
(5) Loot guard
(a) shuts down a port that receives a BPDU when enabled
(b) cuts convergence time by mas-age for indirect failure
(c) prevents the aliernate or root port from being designated in absence of BPDUs
(d) causes Layer 2 LAN interface access port to immediately enter the forwarding state
(f) helps prevent bridging loops due to jni-directional link failures on point-to-point links

A.
(a)-(1);(b)-(2);(c)-(4);(d)-(5);(e)-(3)

B.
(a)-(4);(b)-(3);(c)-(2);(d)-(5);(e)-(1)

C.
(a)-(3);(b)-(2);(c)-(4);(d)-(5);(e)-(1)

D.
(a)-(1);(b)-(4);(c)-(3);(d)-(5);(e)-(2)

Explanation:
Cisco offers a variety of enhancements to STP:
1. PortFast: Allows an access port to bypass STPs listening and learning phases so no need to
wait 50 seconds to forward data.
2. UplinkFast: Reduces STP convergence from 50 seconds to approximately 3 to 5 seconds so no

need to wait 50 seconds to forward data through alternate link
3. BackboneFast: Reduces STP convergence time for an indirect link failure.
4. LoopGuard: Helps prevent loops that could occur because of a unidirectional link failure, a
software failure, or a bridge protocol data unit (BPDU) loss due to congestion
5. RootGuard: Prevents an inappropriate switch from being elected as a root bridge
6. BPDUGuard: Causes a port configured for PortFast to go into the errordisable state if a BPDU
is received on the port