5. Brown, Jones, and Smith are suspected of a crime. They testify as follows: Brown: Jones is guilty and Smith is innocent. Jones:If Brown is guilty then so is Smith. Smith: Im innocent, but at least one of the others is guilty. Let b. j, and s be the statements "Brown is innocent," Jones is inno- cent," Smith is innocent" respectively a) Express the testimony of each suspect as a propositional formula. 14 points] [4 points) b) Write a truth table for the three testimonies. [Rubric: one point for each correct step in the solution