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For the three-part question that follows, provide your answer to each question in the given workspace. Identify each part with a coordinating response. Be sure to clearly label each part of your response as Part A, Part B, and Part C.
A bag contains three blue marbles, five red marbles, and four green marbles.

Part A: What is the probability of selecting three marbles where one is blue and two are green?

Part B: What is the probability of selecting one blue marble and then selecting three red marbles?

Part C: In your own words, write a short paragraph that explains your work for Parts A and B.