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 goes running, then x_2 is a cashier. For all x_2, x_2 will go running. For all x_2, x_2 will climb a mountain.
For all x_2, x_2 is a cashier can be inferred via the universal modus ponens rule. For all x_2, x_2 will go running and x_2 will climb a mountain can be inferred via the universal conjunction rule. For all x_2, x_2 will climb a mountain and x_2 will go running can be inferred via the universal conjunction rule.