What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Name the inference rule being used: For all x_2, if x_2 were a bartender, then x_2 is making tea. For all x_2, x_2 is not a bartender. For all x_2, if x_2 plays squash, then x_2 is a bartender. For all x_2, if x_2 makes tea, then x_2 is playing squash.
For all x_2, x_2 will not play squash can be inferred via the universal modus tollens rule. For all x_2, if x_2 were a bartender, then x_2 is playing squash can be inferred via the universal transitivity rule. For all x_2, if x_2 plays squash, then x_2 is making tea can be inferred via the universal transitivity rule. For all x_2, if x_2 makes tea, then x_2 is a bartender can be inferred via the universal transitivity rule.