【单选题】
Which of the following commands allows navigation of the paths between directories? ()
A、RD
B、DIR
C、MD
D、CD
A、RD
B、DIR
C、MD
D、CD
A、cat /proc/usr/lparchk B、cat /proc/ppc64/lparcfg C、/var/adm/tools/res_list D、/var/adm/tools/lparalloc