AMC 10B 2003 Problem 1

Past Contests AMC 10 2003 Part B
, , ,
1

Which of the following is the same as

\dfrac{2-4+6-8+10-12+14}{3-6+9-12+15-18+21} ?

Answer Choices
A. -1
B. -\dfrac{2}{3}
C. \dfrac{2}{3}
D. 1
E. \dfrac{14}{3}