game theory - coin flipping game

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Lets say $2$ players $A$ and $B$ make a bet, who can have more money at the end after playing the following game:

a coin is flipped:

with $51\%$ probability it lands tails, with $49\%$ probability it lands heads

you win if it lands heads, where you get back your bet $\times 2$.

e.g. you bet $\$1$ and it lands heads, then you get back $\$2$

e.g. you bet $\$2$ and it lands tails, then you get back $\$0$

here are the rules to the bet between A and B (the winner of the bet wins $\$100000$):

  • you both start with $\$100$ (given to you for free, you're not allowed to cash this out nor the money you make from the coin game)
  • each player may play the game as many times as they want and bet as much as they want for each time they play the game
  • player A must go first (player A plays the casino games as many times as he wants then decides to stop, after that, A can't play the game anymore)

obviously the optimal strategy for player $B$ involves playing until $B$ either goes bankrupt or has more money than $A$ (although it's not obvious what bet sizes to use).

what would be the optimal strategy for $A$?