Which statement about metamorphic and sedimentary rocks is true?
a) both types of rocks form under high temperature, but sedimentary rocks also require high heat.
b)only metamorphic rocks show signs of rock layers.
c) both types of rocks form under high pressure, but metamorphic rocks also require high heat.
d )both types of rocks result from the cooling of magma.
e) either type of rock can be classified as intrusive or extrusive.