An aircraft has 6 engines: 3 are attached to the left wing, and 3 are attached to the right wing. During any flight, each engine may fail with probability 0.15 independent from any other engine. 

A. What is the probability that none of the engines will fail in the next flight? 

B. Assume the aircraft can safely continue flying on at least 5 non-faulty engines. What is the probability that next flight will land safely? 

C. Assume the aircraft can safely continue flying on at least 2 non-faulty engines on each wing What is the probability that next flight will land safely?