A bag has 5 red marbles, 4 green marbles and 3 blue marbles. All marbles are identical in all respects other than colour. A marble is taken out from the bag without looking into it. What is the probability that it is a non-green marble?

Options

A. `1/3`
B. `2/3`
C. `7/12`
D. `5/12`

Answer

B