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

Context:

How to get rid of smoke smell<br>Let the book air out. Gently hang an open book over a railing or on a clothesline outside for a few hours to a day. This should cause the smell to decrease.

Hypothesis: Books with hard covers are easier to get smells out of than paperbacks.
pick from the following. 1). Yes. 2). It's impossible to say. 3). No.