Three people are going to climb the mountain. The weather forecast says that it may rain today. Around the weather forecast, the three people argue: A said, "It may rain today, but that does not preclude today or it will not rain. Let's go climbing. " B said: "It may rain today, that means it is going to rain today, we still do n’t go climbing the mountain. " C said, "It may rain today, but it just shows that it is not inevitable that it does n’t rain today. Decide. ". Understanding of weather forecast, among three people? ['A and C are correct, B is incorrect.', 'A is correct, B and C are incorrect.', 'B is correct, A and C are incorrect.', 'C is correct, A and B are incorrect.']