Please answer the below:

Dee Trader opens a brokerage account and purchases 400 shares of Bison Corporation at $50 per share. She borrows $8,000 from her broker to help pay for the purchase. The interest rate on the loan is 8%. Total investment is equal to $20,000. If the price falls to $40 per share by the end of the year, what is the remaining margin in her account? If the maintenance margin requirement is 40%, will she receive a margin call? Please explain why she doesn't get or get a margin call. (Consider interest Expenses) What is the return on her investment? (Consider interest Expenses) How low can the price of Bison Corporation shares fall before you receive a margin call? (Ignore interest)