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) Root 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 alternate or root port from being designated in absence of BPDUs
(d) causes Layer 2 LAN interface access port to immediately enter the forwarding state (e) helps prevent bridging loops due to uni-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:
BPDU guard – shuts down a port that receives a BPDU when enabled
PortFast – helps prevent bridging loops due to uni-directional link failures on point-to-point links
BackboneFast – the alternate or root port from being designated in absence of BPDUs
UplinkFast – cuts convergence time by mas-age for indirect failure
Root guard – causes Layer 2 LAN interface access port to immediately enter the forwarding state