Which of the Following Is Not a True Statement

Multiple Choice

Which of the following is not a true statement?

A) Mudstone is made up of tiny clay minerals but is still considered a clastic sedimentary rock
B) If you were in a swamp where a lot of peat was forming, this material could turn into coal over geologic time with heat and pressure
C) Chert is an organic sedimentary rock made up of very finely crystallize quartz
D) If you found halite in the field, you have discovered a chemical sedimentary rock that is an evaporite
E) All limestone rocks are clastic sedimentary rocks