Read the following statements about cockroach
(i) In male cockroach, a characteristic mushroom shaped gland is present in the `6^(th)-7^(th)` abdominal segments which functions as an accessory reproductive gland
Cockroach is uricotelic
(iii) The fat body and uricose glands are glandular in function
(iv) Blood from sinuses enter heart through ostia and is pumped anteriorly to sinuses again.
Which of the above statements are correct ?