Can I get some help on this question with answer and detailed explanation?

Dynamic Games and Empty threats For the following game, find a Subgame Perfect Equilibrium (1.5 pts); also, find a Nash Equilibrium which is not subgame Perfect and involves an empty threat(1.5 pts). Remember to express the complete strategy of each player when you declare that a strategy profile is an Equilibrium (whether or not is perfect). Y A B 2.4 2. 1 d U 3,2 0.3 1, 1 2,0