You wish to limit telnet access into your Cisco router to only a single host. In order to accomplish this, access list 1 has been written to allow host 172.16.1.224 access to the router vty lines. What command would assign this access- list to the Virtual Terminal Lines?（）

A. router(config-line)# ip access-group 1 in
B. router(config-line)# access-class 1 in
C. router(config-line)# ip access-list 1 in
D. router(config-line)# access-line 1 i