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

Context:

Witnesses told police a gas canister exploded to start the fire in a multilevel building which houses the Ycua Bolanos supermarket, a food court and a parking garage, causing the bottom floor to collapse.

Hypothesis: A small object started the fire
Choices: 1). Yes. 2). It's impossible to say. 3). No.
1).