You are given a 2 nd order Markov model represented in Python as follows: model={("A","A"):{"A":.2,"B":.8},("A","B"):{"B":1},("B","A"):{"A":1},("B","B"):{"A":.8,"B":.2}} If the last state was "B" and the current state is "A", what is the probability that the next state will be "B"? .2 1 .8 0