You are bearish on ABC stock and to sell short 2000 shares and the current market price is RM70. Maintenance margib is 35% and the requirement of initial margin is 50%. Dividend is RM1.50 per share.

a) If the stock price increase by RM10 after a month, what is the rate of return?

b) If the stock price falls by 30% from beginning, what is the rate return?

c) At what price, the trader will receive a margin call?