What is a sequence diagram?
(a) A diagram that shows interacting individuals along the top of the diagram and messages passed among them arranged in temporal order down the page
(b) A diagram that shows messages superimposed on a diagram depicting collaborating individuals and the links among them
(c) A diagram that shows the change of an individual’s state over time
(d) All of the mentioned
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Question is from UML Sequence Diagrams topic in division Unified Modelling Language of Software Architecture