An AI assistant was asked the following:

"Please create a pseudocode function that can check if a given number n is prime or not, where n $>1."$

The assistant returned the three following functions:

Function A

Function B

Function C

function$($e$)\{$var t$=$e$.$match$(/\{\{\backslash$s$*$whitespace$\backslash$s$*\backslash |\backslash$s$*(.*?)\backslash$s$*\}\}/)[1]$;return'$\text{'}.$concat$($t$,"")\}$function$($e$)\{$return n$[$e$.$replace$(/(^\{\{)|($function$($e$)\{$var t$=$e$.$match$(/\{\{\backslash$s$*$whitespace$\backslash$s$*\backslash |\backslash$s$*(.*?)\backslash$s$*\}\}/)[1]$;return'$\text{'}.$concat$($t$,"")\}$$$)/$g$,"")]||""\}\}\}$

function$($e$)\{$var t$=$e$.$match$(/\{\{\backslash$s$*$whitespace$\backslash$s$*\backslash |\backslash$s$*(.*?)\backslash$s$*\}\}/)[1]$;return'$\text{'}.$concat$($t$,"")\}$function$($e$)\{$return n$[$e$.$replace$(/(^\{\{)|($function$($e$)\{$var t$=$e$.$match$(/\{\{\backslash$s$*$whitespace$\backslash$s$*\backslash |\backslash$s$*(.*?)\backslash$s$*\}\}/)[1]$;return'$\text{'}.$concat$($t$,"")\}$$$)/$g$,"")]||""\}\}\}$

function$($e$)\{$var t$=$e$.$match$(/\{\{\backslash$s$*$whitespace$\backslash$s$*\backslash |\backslash$s$*(.*?)\backslash$s$*\}\}/)[1]$;return'$\text{'}.$concat$($t$,"")\}$function$($e$)\{$return n$[$e$.$replace$(/(^\{\{)|($function$($e$)\{$var t$=$e$.$match$(/\{\{\backslash$s$*$whitespace$\backslash$s$*\backslash |\backslash$s$*(.*?)\backslash$s$*\}\}/)[1]$;return'$\text{'}.$concat$($t$,"")\}$$$)/$g$,"")]||""\}\}\}$

Question:

With respect to memory efficiency and time complexity, please select which function is the most efficient while still being a valid implementation.

Function A is the most efficient function

Function B is the most efficient function

Function C is the most efficient function

All three functions are the same in terms of efficiency