How should Southwest should grow, given that fact that it has largely saturated its short-haul markets with point-to-point service? Should it expand into long haul and add a longer range aircraft? Should it expand into international service? If it does, how will this differ from its current strategy/business model and how will this influence performance?

a	Southwest should acquire planes with higher seating capacity
b	Southwest should only expand to long haul on routes where they can remain the low-cost leader
c	Southwest should adopt the hub and spoke model
d	Southwest should not expand to long haul flights because of capital investment costs