A board game spinner is divided into three regions labeled A, B and C. The probability of the arrow stopping on region A is \dfrac{1}{3} and on region B is \dfrac{1}{2}. The probability of the arrow stopping on region C is
Answer Choices
A. \dfrac{1}{12}
B. \dfrac{1}{6}
C. \dfrac{1}{5}
D. \dfrac{1}{3}
E. \dfrac{2}{5}