Which of the following is false about Concurrent composite states?

• A. Concurrent composite states simplify state diagrams by greatly reducing the number of states and transitions
• B. Any set of concurrent state diagrams can be converted into an equivalent sequential state diagram, but the number of states in the sequential state diagram may be as much as the product of the number of states in each of the concurrent state diagrams
• C. All of the mentioned
• D. None of the mentioned