Which of the Following Statements Is Not True About Clastic

Multiple Choice

Which of the following statements is not true about clastic sedimentary rocks?

A) Clasts in a conglomerate or breccias can be different rock types or can be all the same rock type.
B) To be called a sandstone,quartz must make up more than 95 percent of the grains.
C) The amount of pore space decreases as a sand is compacted into sandstone.
D) The natural cement that holds sedimentary rocks together is composed of dissolved minerals that precipitate.