2. a) Consider a time-homogeneous continuous-time Markov chain on a countable state space S with Q-matrix (qx.y)..yes. Denote by Y the position of the first jump and by J2 the time of the second jump of such a chain starting from x. (i) Show that P.(J2 51) S (1)E,[1 - Y3'), V 20. (ii) Deduce that P.(251) si quQy, Vi20.