A team of geologists wants to study hard, solid rock under the surface of Earth. The team is considering drilling down in the North Atlantic Ocean (1) and in Sierra Leone (2). Where will the team find hard, solid rock? A: only under 2, because Earth’s outer layer is made of hard, solid rock under continents but not under the ocean
B: under 1 and 2, because Earth’s entire outer layer is made of hard, solid rock
C: neither under 1 nor 2, because there is water under both places
D: neither under 1 nor 2, because there is sand and gravel under both places