Final answer:
Pilots experiencing icing and rolling should activate their aircraft's anti-icing or de-icing systems to safely rectify the situation.
Step-by-step explanation:
If a pilot detects icing while also experiencing a rolling condition, they should apply anti-icing or de-icing systems. It is not advisable to continue flying as normal because the accumulation of ice can alter the aerodynamics of the aircraft, potentially leading to a loss of control. Increasing speed might not be effective and can be dangerous, given the stressed state of the airframe during a roll.
Decreasing speed is equally risky as it might not solve the icing problem and can further destabilize the aircraft. The correct action is to utilize the aircraft's designed systems to combat icing, ensuring the safety and stability of the flight.