Do we serve pork barbacoa?

The correct choice indicates that only beef is available on the menu, excluding pork barbacoa entirely. This choice signifies adherence to a specific menu that has determined beef as the primary meat option without the inclusion of pork. The absence of pork barbacoa in the offerings reflects a conscious decision made by the restaurant which can be based on various considerations such as customer preferences, dietary restrictions, or sourcing policies.

In this context, options that suggest the presence of pork barbacoa, either in conjunction with beef, on specific days, or limited to certain locations, don't align with the menu offerings as specified in the question. Thus, the chosen answer accurately represents the menu situation regarding pork barbacoa at Dave and Buster’s.