Which of the following is correct match between column-A and column-B?

Colum-A (Type of rock)		Column-B (Method of formation)
i.	Sedimentary-rock	a.	Transformed its chemical qualities from other type of rocks
ii.	Metamorphic rock	b.	Derived from magma that was poured out or ejected at the Earth's surface
iii.	Igneous rock	c.	Formed from fragments of other rocks or the remains of plants or animals