How to filter wine<br>Obtain a gravity flow filter. This method of filtering is the cheapest of all the filtration methods. It works by connecting the filter body, containing a filter pad, with a siphon tube.

Choose your answer: based on the paragraph above can we conclude that "All methods of filtering, apart from gravity flow filter, are expensive."?

Options are:
 - Yes;
 - It's impossible to say;
 - No;
I think the answer is
It's impossible to say