Consider the propositional formula $rc$ where $r="$it is raining" and $c="$it is cloudy:"

Assume it is not raining. Which of these describes what we know about the truth of $rc?$

$c$ is true.

$Tc$ is false.

Whether $rc$ is true or not depends on whether $c$ is true.

Whether $rc$ is true or not depends on something else.