![Which of the following features is used to identify a male cockroach from a female cockroach?](https://www.gkseries.com/blog/wp-content/uploads/2023/09/Which-of-the-following-features-is-used-to-identify-a-male-cockroach-from-a-female-cockroach.jpg)
Which of the following features is used to identify a male cockroach from a female cockroach?
Option 1 : Presence of a boat shaped sternum on the 9th abdominal segment.
Option 2 : Forewings with darker tegmina
Option 3 : Presence of caudal styles
Option 4 : Presence of anal cerci