There are three distinctions: A, B, and C. Consider the following statements:
I. c,&} = M|&}
II. B is irrelevant to C given &.
III. B is irrelevant to A given &.
IV. C is irrelevant to A given &.
Which one of the following statements is true?
a. Given statements I, II, and III, statement IV is never true.
b. Given statements I, II, and III, statement IV is sometimes true.
c. Given statements I, II, and III, statement IV is always true.
d. Statements I, II, and III can never all be true.