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

Context:

How to do a valdez<br>Sit upright with your left leg extended in front of you, and your right leg standing bent. Point your left toe straight ahead. You should feel the muscles in your left leg tighten as you stretch your toes.

Hypothesis: Your left leg will tighten when doing a valdez

(A). Yes;
(B). It's impossible to say;
(C). No;
(A).