What is the Red, Green, Refactor workflow?

$1$ point

Ensuring that no one can call the code $($red$),$ then deciding how you want to call the code $($green$)$

Writing code first $($red$),$ then writing a test for it $($green$)$

Avoiding code failure $($red$)$ by writing the most refined, error$-$free code $($green$)$

Writing a failing test case $($red$),$ then writing enough code to make the unit test pass $($green$)$