Choose from options: Determine if the sentence is true based on the text below:
Schools of fish can be sensed using these acoustic methods, but they are only effective at distances under 50 feet.

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.
Available options:
a). Yes;
b). It's impossible to say;
c). No;
c).