Can we draw the following hypothesis from the context (see options)? 

Context:

Gunfighters of Casa Grande (Spanish: "Los Pistoleros de Casa Grande" ) is a 1964 Eurowestern film, co-produced by American and Spanish producers. Based on a story by Borden and Patricia Chase, it was later developed into a screenplay with the assistance of screenwriter Clark Reynolds and directed by Roy Rowland, the last film he made for Metro-Goldwyn-Mayer.

Hypothesis: Gunfighters of Casa Grande has been seen by Zack.
Pick from: (a). Yes (b). It's impossible to say (c). No
(b).