Which Is Not a True Statement

Multiple Choice

Which is not a true statement?

A) 75 percent of the continents are covered with sedimentary rocks
B) Sedimentary rocks comprise over 15 percent of the Earth's crust
C) If you find a conglomerate sample in the field, you have discovered a clastic sedimentary rock
D) If you find a coal layer in the field, you have discovered an organic sedimentary rock
E) If you find rock salt in the field, you have discovered a chemical sedimentary rock
F) If you find a limestone rock in the field, you have discovered a bioclastic sedimentary rock