in a contest players have to pick marbles from a bag the bag contains 30 blue marbles 20 yellow marbles 10 red marbles and 40 yellow marbles. a player is wins 7$ on picking a green marble losses 5$ on picking a blue marble loses 3$ on picking a yellow marble and wins 2$ on picking a red marble. what is the expected value of the money earned in 100 draws assuming the marble is returned each time before another is drawn??
A. 50$
B.90$
C. 100$
D. 200$
