Can we draw the following hypothesis from the context (see options)? 

Context:

I think that we do. It's pollution, carbon dioxide, and other chemicals that are even more potent, but in smaller quantities, that cause this. Look, the world's temperature is going up, weather patterns are changing, storms are getting more violent and unpredictable.

Hypothesis: Storms are becoming less severe.
Options are:
I. Yes;
II. It's impossible to say;
III. No;
III.