Find the Probability of the Event If a Single Choice $\frac { 4 } { 3 }$

Multiple Choice

Find the probability of the event if a single choice is made from a bag.
-A bag contains 8 red marbles, 3 blue marbles, and 1 green marble. What is the probability of choosing a marble that is not blue when one marble is drawn from the bag?

A) $\frac { 4 } { 3 }$
B) $\frac { 3 } { 4 }$
C) 9
D) $\frac { 1 } { 4 }$