The equation of motion of a projectile is $\mathrm{y}=\mathrm{ax}-{\mathrm{bx}}^2$, where a and b are constants of motion. Match the quantities of column I with the relations of column II.

	List - I		List - II
A.	The initial velocity of projection	p.	a/b
B.	The horizontal range of projectile	q.	$\mathrm{a}\sqrt{\frac{2}{\mathrm{bg}}}$
C.	The maximum vertical height attained by projectile	r.	$\frac{{\mathrm{a}}^2}{4\mathrm{b}}$
D.	The time of flight of projectile	s.	$\sqrt{\frac{\mathrm{g}\left(1+{\mathrm{a}}^2\right)}{2\mathrm{b}}}$

	A	B	C	D
1.	p	q	r	s
2.	s	p	q	r
3.	s	p	r	q
4.	p	s	r	q