There are 6 green marbles, 8 red marbles, 7 blue marbles, and 1 black marble in a bag. The teacher will make any student that chooses a green marble a leader. The probability of choosing a green marble is __________.

A.  8/11; it is unlikely to be chosen as a leader

B.  3/11; it is likely to be chosen as a leader

C.  3/11; it is unlikely to be chosen as a leader

D.  8/11; it is likely to be chosen as a leader