Probability, SM-Bank 027 MC

Ryan has white and black marbles in his bag.

If he chooses a marble from the bag without looking he is likely, but not certain, to get a white marble.

Which is Ryan's bag?

A.	B.	C.	D.

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\(A\)

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\(\text{The 1st option gives a}\ \dfrac{3}{5}\ \text{chance of a}\)

\(\text{white marble (likely but not certain).}\)

\(\Rightarrow A\)