Choose the One Alternative That Best Completes the Statement or Answers

Multiple Choice

Choose the one alternative that best completes the statement or answers the question.
-A spinner has regions numbered 1 through 21. What is the probability that the spinner will stop on an even number or a multiple of 3?

A) $\frac { 10 } { 9 }$
B) 17
C) $\frac { 2 } { 3 }$
D) $\frac { 1 } { 3 }$