A small office needs to provide outbound dialing and in-bound DID without the cost of a T1 circuit.
All signaling is loop start. Which analog port configuration will support these requirements?

A.
voice-port 0/0/0
description fxs-did
signal did loop-start
!

voice-port 0/1/0
description fxo
signal loop-start
!
dial-peer voice 1 pots
incoming called-number .
direct-inward-dial
port 0/0/0
!
dial-peer voice 90 pots
destination-pattern 9T
port 0/1/0

B.
voice-port 0/0/0
signal loop-start
!
voice-port 0/1/0
signal loop-start
!
dial-peer voice 1 pots
incoming called-number T
direct-inward-dial
!
dial-peer voice 90 pots
destination-pattern 9T
port 0/1/0

C.
voice-port 0/1/0
signal did loop-start
!
dial-peer voice 1 pots
incoming called-number .
!
dial-peer voice 90 pots
destination-pattern 9T
port 0/1/0

D.
voice-port 0/0/0
signal did loop-start
!
dial-peer voice 1 pots
incoming called-number .
direct-inward-dial
!
dial-peer voice 90 pots
destination-pattern 9T
port 0/0/0

Explanation: