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

Context:

These acoustic methods are now expected to be useful for the long-range remote sensing of schools of fish as well as for distant ocean bottom characterizations.

Hypothesis: When mapping the bottom of the ocean, scientists avoid using these acoustic methods because there are other effective techniques.
Choices: (A). Yes; (B). It's impossible to say; (C). No;
(C).