Using sudo in scripts

[Gary Call]

This may sound like a basic question, but I have not been able to find
an answer anywhere.

Here is my scenario:
I need to give "userA" sudo access to a menu driven script.  The menu
driven script will execute other system commands (i.e. cpio, tar, mt).

Question:
If the user executes the script (using sudo), will all of the other
commands (cpio, tar, mt....) be executed with sudo prefixed, or will I
need to prefix every command with sudo into the script?

Any help or guidance is greatly appreciated!

Thanks,
Gary