What are the device special files naming convention in an HP-UX environment?

A.
Block Device is /dev/hdisk# and Character Device is /dev/rhdisk#

B.
//./PHYSICIALDRIVE#

C.
Block Device is /dev/dsk/c#t#d# and Character Device is /dev/rdsk/c#t#d#

D.
Block Device is /dev/dsk/c#t#d#s2 and Character Device is /dev/rdsk/c#t#d#s2