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: Linda is playing a game if and only if it is overcast. Linda is playing a game if and only if it is overcast.
If Linda plays a game, then it is overcast can be inferred via the biconditional elimination rule. If Linda plays a game, then it is overcast can be inferred via the biconditional elimination rule. If it is overcast, then Linda is playing a game can be inferred via the biconditional elimination rule. If it is overcast, then Linda is playing a game can be inferred via the biconditional elimination rule.