D Question 23 Refer to the following capacity-expansion game: Firm B Strategy Don't Expand Expand Small Expand Large Don't Expand 18, 18 15, 20 6. 18 Firm A Expand Small 20, 15 16. 16 8. 12 Expand Large 18. 10 12, 8 0. 0 Transform the information provided in the table into a sequential-move game in which firm A moves first and firm B moves second, with the payoffs remaining the same. What is the subgame perfect Nash equilibrium? O A: don't expand; B: don't expand. O A: expand small; B: expand small. O A: expand small; B: expand large. O A: expand large; B: don't expand