Simulation Test 2 #181 clarification

Here is the question below. My questions confusion is coming from option B. I was under the impression that ADM or AOA could utilize other precedence diagramming methods?

All the statements about the Arrow Diagramming Method (ADM) or Activity-on-Arrow (AOA) are true EXCEPT
A - The nodes are used to represent activity and arrows show activity dependency
B - Uses only Finish to Start relationship between activities...

Simulation Test 2 #181 clarification