Which the following statements are true? I. Adding an arrow (without creating a cycle) preserves the irrelevance statements graphically shown in the relevance diagram. II. A relevance diagram...

Which the following statements are true?

I. Adding an arrow (without creating a cycle) preserves the irrelevance statements graphically shown in the relevance diagram.

II. A relevance diagram communicates the degrees of the uncertainties that it depicts.

a. Only I

b. Only TI

c. Both I and II

d. Neither I nor II