SAT MATH PLS HELPPP A clear jar is filled with black, red, and green marbles.

There are 6 black marbles and each marble is uniquely

marked with a number 1 through 6. There are also six red

marbles and six green marbles numbered the same way.

Given that a black or a red marble is randomly selected,

what is the probability that it is marked with a number

greater than 4?

a) 1/9
b) 1/3
c) 4/9
d)2/3