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: It is not sunny. Linda is driving a car if and only if Karen is playing tennis. It is raining if and only if it is sunny. If Karen plays tennis, then it is raining.
If Linda drives a car, then Karen is playing tennis can be inferred via the biconditional elimination rule. If it rains, then it is sunny can be inferred via the biconditional elimination rule. If Karen plays tennis, then Linda is driving a car can be inferred via the biconditional elimination rule. If it is sunny, then it is raining can be inferred via the biconditional elimination rule. It is not raining can be inferred via the biconditional elimination rule.