What are the default connect strings used by SQL*Plus and ASMCMD when connecting to ASM instances?

A.
operating system authentication for ASMCMD-none for SQL*Plus

B.
"/ as sysasm" for ASMCMD’ "/" for SQL*Plus

C.
"sys/ as sysasm" for ASMCMD; "/ as sysdba" for SQL* Plus

D.
operating system authentication for ASMCMD;
operating system authentication for SQL*Plus

E.
"/ as sysasm" for ASMCMD;
Operating system authentication for SQL*Plus