Which one of the following options represent a valid declaration of a backend server with HAProxy?
A. host server_x 10.1.0.1:80 cookie server_x
B. backend server_x 10.1.0.1:80
C. server server_x 10.1.0.1:80 check
D. pool server_x 10.1.0.1:80
Which one of the following options represent a valid declaration of a backend server with HAProxy?
A. host server_x 10.1.0.1:80 cookie server_x
B. backend server_x 10.1.0.1:80
C. server server_x 10.1.0.1:80 check
D. pool server_x 10.1.0.1:80