Select all true statements

If we read the value $10$ from a file it will be stored as a string and we must use casting to convert it to an integer

If we want to write new information at the end of an existing file, we must open the file the $\text{'}$a$\text{'}$ mode

The following code reads one line of code at a time from a$\_$file object:

a$\_$file.read$()$

A context manager $($a with$-$statement$)$ closes the file automatically when the statement ends