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: Charles is curious if and only if Michael is an artist. If it is sunny, then Charles is curious. If Michael were an artist, then it is sunny.
If Michael were an artist, then Charles is curious can be inferred via the transitivity rule. If Charles were curious, then Michael is an artist can be inferred via the biconditional elimination rule. If Michael were an artist, then Charles is curious can be inferred via the biconditional elimination rule.