A bank is considering investing in two different portfolios. Portfolio A has a 40% chance of generating a profit of $500,000 and a 60% chance of generating a loss of $250,000. Portfolio B has a 70% chance of generating a profit of $200,000 and a 30% chance of generating a loss of $100,000. The bank has a risk tolerance of $150,000. Which portfolio should the bank choose, and what is the expected value of the chosen portfolio?