M: We haven't had any rain for nearly three months. It seems that there isn't a drop of water in the sky. W: Is it because we had too much rain in the last two years? M: Well, it reminds me of the Nantong earthquake in 1970. It followed a big flood and a long period of dry weather, just like this year. Q: What does the man mean?
A) The city of Nantong has had several earthquakes.
B) Extreme weather is quite common in some places.
C) Earthquakes seem to happen after flood and dry weather.
D) They have had some unusual weather this year.