Which of the Following Is Not a Part of the Characteristics

Multiple Choice

Which of the following is not a part of the characteristics of a Markov system?

A) In each period the system can assume one of a number of states
B) Transition probabilities describing the system changes from period to period remain constant
C) The states of the system overlap
D) The probability of going from a state in period $n$ to another state in period $(n+1)$ depends only on the current state of the system