Which of the Following Are Requirements in Order to Run

Multiple Choice

Which of the following are requirements in order to run a shell script like a regular command from anywhere in the filesystem?

A) The user issuing the command must be in the group script.
B) The script file must be found in the $PATH.
C) The script file must have the executable permission bit set.
D) The script must begin with a shebang-line (#!) that points to the correct interpreter.
E) The file system on which the script resides must be mounted with the option scripts.