the range of Gangnam, where everyone has different opinions

(1)How far do you recognize Gangnam in your daily life
(2)1 Gangnam District
(3)2 Gangnam-gu, Seocho-gu
(4)3. Jamsil, Seocho-gu, Gangnam-gu
(5)4 Gangnam-gu, Seocho-gu, Songpa-gu
(6)5 Gangnam-gu, Seocho-gu, Songpa-gu, Gangdong-gu
(7)6 All districts south of the Han River
(8)7 Other comments