I need help in these questions. I have only 30 minutes, please answer them fast

An investor buys a T-bill at a bank discount quote of 3.75 with 120 days to maturity and a face value of 510,000.00. The investor's bond equivalent yeld on this investment is 3.85% 3.74% 3.80% 3.95% 3.70% get a margin call at what price if the maintenance margin requirement is 30.00% of the value of the short position? \$251.43 594.29 | 143.00 $135.38 $176.00