Which of the following could NOT be probability distribution ?

Example A Example B Example C

x P(x) x P (x) x P (x)

0 .40 1 .15 50 .40

1 .60 2 .20 60 .60

3 .25 70 .50

4 .20

5 .10

Multiple Choice

Example B and C

Example A and C

Example A and B

None