You buy 100 shares of XYZ stock at $45/share, in a 60% margin account. a. What is the debit balance (borrowed money) in the account? b. How much equity did the investor provide? c. If the stock price rises to $65/share, what is the new margin position? d. What amount of stock can you sell and withdraw the cash to maintain 60% margin position? e. If the stock price remains at $65/share, and you chose to buy more stock rather than d. above, how much more stock can you buy to maintain exactly 60% margin position?