A overset(O_(3)NO_(2))(rarr) PAN, then ratio of sigma and pi bonds in the starting substance "A" is

A overset(O_(3)NO_(2))(rarr) PAN, then ratio of sigma and pi bonds in

1.	A overset(O_(3)NO_(2))(rarr) PAN, then ratio of sigma and pi bonds in the starting substance "A" is
Answer» `7:2` `2:7` `3:5` `5:3` ANSWER :A