In terms of bulk modulus K and modulus of rigidity C the Poisson's ratio can be expressed asA(3K - 4C) / (6K+4C)B3K-2C) / (6K+2C)C(3K+4C) / (6K-4C)D(3K+2C) / (3K-2C)Answer: B. 3K-2C) / (6K+2C)