Variable$-$length character data with a maximum length of $4,000$ characters; you must enter a maximum field length $($e$.$g$.,$ VARCHAR$2(30)$ specifies a field with a maximum length of $30$ characters$).$ A string that is shorter than the maximum will consume only the required space is known as what data type?

INST$2$

DATA$2$

CODE$2$

VARCHAR$2$