If form A must be completed before form B is used,and form A must be completed before form C is used,there is a precedence relationship between A and B,and between A and C,but not between B and
C.

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Quizplus · Accepted Answer

This is because there is a clear sequence of events that must occur - form A should be completed before any further forms can be used. However, there is no specific relation between form B and form C, other than that both require form A to be completed beforehand. Therefore, the precedence relationship exists between forms A and B, as well as between forms A and C, but not between forms B and C.

If Form a Must Be Completed Before Form B Is