Find the Probability $\frac { 1 } { 4 }$ B) $\frac { 4 } { 3 }$

Multiple Choice

Find the probability.
-A bag contains 5 red marbles, 2 blue marbles, and 1 green marble. What is the probability that a randomly selected marble is not blue?

A) $\frac { 1 } { 4 }$
B) $\frac { 4 } { 3 }$
C) 6
D) $\frac { 3 } { 4 }$