What two conditions indicate an imminent cold front passage?

1. 1A high dew point and falling barometric pressure
2. 2A high dew point and rising barometric pressure
3. 3A falling dew point and steady barometric pressure
4. 4A low dew point and rising barometric pressure

Source: Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25C), Chapter 12: Weather Theory — Air Masses and Fronts, page 304