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

Context:

How to use adjustable objective rifle scopes<br>Be sure that your scope is mounted properly. Sighting-in can have been done preliminarily, but additional sighting-in will be desirable after following these steps : Know your rifle. There are actually two optical systems in a rifle scope.

Hypothesis: Knowing your rifle means shooting it a lot. 
Pick your answer from:
(1). Yes
(2). It's impossible to say
(3). No
(2).