(2) Assume an initial margin requirement of 50% and a maintenance margin of 30%. An investor buys 100 shares of stock on margin at $60 per share. The price of the stock subsequently drops to $50. What is the actual margin at $50? The price now rises to $55. Is the account restricted? If the price declines to $49, is there a margin call? Assume that the price declines to $45. What is the amount of the margin call? At 35$