There is a saying that everyone is a general after the battle, but I still could not figure out what could have Napoleon done differently in order to save his army and consequently empire after Borodino. Historically, he stayed in Moscow some time, then tried to go to Smolensk (his supply base) via Kaluga, through countryside that was not devastated by previous marches and campaigns in order to obtain necessary forage and other supplies. But after Maloyaroslavets, he abandoned that goal and went towards Smolensk roughly on the same road he took during advance on Moscow in previous summer. What would have been a better solution for him and his forces ?
a) to retreat immediately after Borodino towards Smolensk, before the onset of winter
b) to stay in Moscow and try to prepare winter quarters there, then to resume campaign in spring
c) to push towards Kaluga no matter the cost even after Maloyaroslavets
d) something totally different
e) nothing would have saved him at that point