AMC8 1989 Problem 12

Past Contests AMC8 AMC 8 - 1989
1

\dfrac{1-\dfrac{1}{3}}{1-\dfrac{1}{2}}=

Answer Choices
A. \dfrac{1}{3}
B. \dfrac{2}{3}
C. \dfrac{3}{4}
D. \dfrac{3}{2}
E. \dfrac{4}{3}