Which of the following represents history state?
(a) A history state is a pseudo-state that serves as a marker indicating that the sub-state last active when the composite state was exited should be re-entered
(b) The history state indicator is a circled H
(c) A history state may have a single unlabeled transition arrow emanating from it to one of its peer states
(d) All of the mentioned
I have been asked this question in an internship interview.
The origin of the question is Advanced UML State diagrams topic in section Unified Modelling Language of Software Architecture