12. If a marble is selected at random from a bag containing only red and ... ...

If a marble is selected at random from a bag containing only red and black marbles, what is the probability that the marble will be red?

(1) There are 9 marbles in the bag.

(2) There are 3 red marbles in the bag.


(A) if statement (1) ALONE is sufficient to answer the question but statement (2) alone is not sufficient;
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Nova Press: Set C - More Practice