Consider a two player game in which each player has only two strategies.
(a) If players move sequentially, it may be that the player who moves rst picks a choice that would be strictly dominated if players moved simultaneously;
(b) If players move sequentially, then it must be that the player moving rst picks a strategy that is part of a Nash equilibrium in the game in which players move simultaneously;
(c) If players move sequentially, then it must be that the player moving second picks a strategy that is part of a Nash equilibrium in the game in which players move simultaneously;
(d) None of the above.