Which of the following statements is true? rocks with crystals larger than 1/2 mm have a fine texture. rocks that solidify at high temperatures have high levels of iron (fe). extrusive rocks form when magma cools deep below earth's surface. the crust beneath earth's oceans is made of granite

The following choices are

A. Rocks with crystals larger than 1/2 mm have a fine texture.
B. Rocks that solidify at high temperatures have high levels of iron (Fe).
C. Extrusive rocks form when magma cools deep below Earth's surface.
D. The crust beneath Earth's oceans is made of granite

Among the statements, the choice that is true is choice B. Rocks that solidify at high temperatures have high levels of iron (Fe).