What is the correct order of the following elements with respect to their density?

Match List - I and List - II.

	List I		List II
(a)	Valium	(i)	Antifertility drug
(b)	Morphine	(ii)	Pernicious anaemia
(c)	Norethindrone	(iii)	Analgesic
(d)	Vitamin $${B_{12}}$$	(iv)	Tranquilizer

The correct shape and $$I - I - I$$ bond angles respectively in $$I_3^ - $$ ion are :

The diazonium salt of which of the following compounds will form a coloured dye on reaction with $$\beta$$-Naphthol in NaOH?