Which statements about the following piece of code are TRUE? $($Check all that apply$)$

char $*$ repeated $($char$*$ original, int n$)\{$

int i$,$ length $=$ strlen$($original$)$;

char$*$ newString $=$ malloc $($sizeof$($char$)*$ length $*$ n $+1)$;

char $*$ helper $=$ newString;

for $($i $=0$; i $<$ n; i$++)\{$

strcpy$($helper$,$ original$)$;

helper $=$ helper $+$ length;

$\{$

return newString;

$\}$

$-$ Each time helper is incremented by the length of the incoming string, its value jumps to the NULL character location in the newly built string

$-$ helper is a pointer that initially points to the beginning of the string that is passed to function repeated

$-$ strlen function returns the number of characters in the string passed to repeated, including the NULL character

$-$ In order to perform memory clean$-$up$,$ the free statement should be placed inside the function that calls function repeated but only after the resulting value is no longer needed