Can I get the answer of this please?? Thanks

Halifax Souvenir Company currently orders 500 units four times each year. Each order costs $12 and each unit costs $1.20 per year to carry. On average, it takes 5 days to receive an order from the supplier. Company operates 250 days per year. Required: a) What is the EOQ? b) Calculate total annual inventory cost under EOQ. c) What is the current inventory cost? d) Should the company change to EOQ system? Please explain. e) What is the re-order point