What is the starting substance in the preparation process of a detergent by the action of ${\mathrm{H}}_2{\mathrm{SO}}_4$ followed by neutralization?

Match List - I with List - II.

	List-I		List-II
A		I	Dishwashing powder
B		II	Toothpaste
C	${\mathrm{C}}_{17}{\mathrm{H}}_{35}{\mathrm{COO}}^{-}{\mathrm{Na}}^{+}+{\mathrm{Na}}_2{\mathrm{CO}}_3+$ Rosinate	III	Laundry soap
D	${\mathrm{CH}}_3{\left({\mathrm{CH}}_2\right)}_{16}\mathrm{COO}{\left({\mathrm{CH}}_2{\mathrm{CH}}_2\mathrm{O}\right)}_{\mathrm{n}}{\mathrm{CH}}_2{\mathrm{CH}}_2\mathrm{OH}$	IV	Hair conditioner

Choose the correct answer from the options given below

Which type of detergent is LAS?

(i) Anionic (ii) Cationic (iii) Biosoft (iv) Biohard