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

Context:

Catch the Thief<br>The police were trying to catch a neighborhood thief. They decided to stake-out the entire area that night. They didn't catch the thief so decided to continue the stake-out. Four nights later they saw the thief. All the police officers rushed to grab the guy and they caught him.

Hypothesis: They decided to stake-out the entire area 4 hours that night.
Available choices: a). Yes; b). It's impossible to say; c). No;
b).