Analyze the code and choose the statements that are correct about this code. Select all that apply.

#include

#include

#include

#include

int main$()$

$\{$

int n$,$ fd$1,$ fd$2$;

char buf$[30]$;

int fd$1=$ open$("$sample$1.$txt$",$ O$\_$RDONLY, $0)$;

n$=$ read$($fd$1,$ buf, $20)$;

int fd$2=$ open$("$sample$2.$txt$",$ O$\_$CREAT$|$O$\_$WRONLY, $0624)$;

write$($fd$2,$ buf, n$)$

$\}$

Only $20$ bytes of sample$1.$txt are copied to sample$2.$txt

This code creates sample$2.$txt

sample$1.$txt file is opened in read$-$only mode

The contents of sample$1.$txt are copied to sample$2.$txt