Which one of the following will create a new variable $($iasp$\_$prompt$)$ and assigned value of PS$1$ into it$?$

A$)$ iasp$\_$prompt$="$$PS$1"$

B$)$ iasp$\_$prompts$<<"$PS$1"$

C$)$ iasp$\_$prompts$>>"$$PS$1"$

D$)$ iasp$\_$prompts$=="$$PS$1"$