Statement (I): Activity streams along a component Work-Breakdown Structure along a sub-path can refer also to an auxiliary Work-Breakdown Structure considered vertically in segments of adjacent sub-paths.Statement (II): Work-Breakdown Structures refer to a single sub-path with a progressive duration along the activity arrows.

• A. Both Statement (I) and Statement (II) are individually true and Statement (II) is the correct explanation of Statement (I)
• B. Both Statement (I) and Statement (II) are individually true but Statement (II) is not the correct explanation of Statement (I)
• C. Statement (I) is true but Statement (II) is false
• D. Statement (I) is false but Statement (II) is true