Creating If Else Statement

Hey!

I'm trying to use If Else statements to display particular passage text depending on the player's previous choices.

Passage C is reached by the player through Choice A or Choice B (this has a longer path).

I want to display certain text is the player reaches Passage C through Choice A and different text if reached through Choice B.

I've looked at tutorials but can't seem to figure out how to phrase my statement to make it work. I'm using Harlowe on Twine 2.