A Bag Contains Ten Green Balls, Five Blue Balls, and Fifteen

Multiple Choice

A bag contains ten green balls, five blue balls, and fifteen yellow balls. If an individual picks a green ball from the bag, she wins $200. If she picks either a blue ball or a yellow ball, she loses $300.
-Refer to the scenario above. What is the expected value of the game?

A) -$15.64
B) $27
C) -$33.33
D) $35.75