a) Nina was about to leave for home at 5PM and she discovered that she lost her car keys. The following statements are true. If her car keys were on the computer table, then she saw it before meeting. She was holding the car keys in the meeting room or she was halding the car keys in the office. If she was holding the car keys in the meeting room, then the car keys were on the meeting desk. She did not see the car keys before meeting. If she was holding the car keys in the office, then the car keys were on the compuler table. Where are the car keys? Solve the problem using propositional logic. Use the following representation to answer your quastion. p: car keys were on the computer table q: She saw it before meeting r. She was holding the car keys in the meating room s: She was holding the car keys in the office t: The car keys were on the meeting desk