Need 5 rocks in Chronological order

[BrainDrain]

I'm stumped at this question, but does anyone here know what chronological order these go in:

Gabbro

Sedimentary

Contact Metamorphic

Basalt

I'm doing a quiz and can't get past this Question

[mark]

Hi BrainDrain,

Well, I only count four types of rock listed.

This page might give you your answeres- Rocks.

DL