Which command turns on FWSM traffic authentication from the Internet

Refer to the exhibit. Which command turns on FWSM traffic authentication from the Internet to an inside-network SMTP server at address 10.1.2.3?

A.
Access-list allow-in extended permit smtp any host 10.1.2.3

B.
Access-list allow-in extended permit tcp any host 10.1.2.3 eq smtp

C.
Aaa authentication allow-in extended permit tcp any host 10.1.2.3 eq smtp

D.
Aaa authentication match smtp any host 10.1.2.3 server name corpaaaserver 13
642-973