valid O invalid (circle one): c. The argument is 1. p +~(qVr) 2. p Vs 3. qer 4. (At) + u 5. rvt 6. S ..u If you stated the argument is invalid, provide an invalidating truth assignment here: P = Q = T = S = t = If you stated the argument is valid, provide a proof here you can delete the rows you don't need): inference rule valid O invalid (circle one): c. The argument is 1. p +~(qVr) 2. p Vs 3. qer 4. (At) + u 5. rvt 6. S ..u If you stated the argument is invalid, provide an invalidating truth assignment here: P = Q = T = S = t = If you stated the argument is valid, provide a proof here you can delete the rows you don't need): inference rule