Which function does the probability distribution graph represent?
A). P(x) = 2x+1 /20 for x = 1, 2, 3, and 4
B). P(x) = 2x+1 /20 for x = 4, 5, 6 and 7
C). P(x) = 2x+1 /20 for x = 2, 4, 6, and 8
D). P(x) = 2x+1 /20 for x = 1, 3, 5, and 7
