Although Fossils Can Be Made in Numerous Ways, Only a Tiny

Although fossils can be made in numerous ways, only a tiny fraction of living organisms leave behind any kind of fossil remnant because

A) most minerals that replace organic material are soluble in water and so dissolve away
B) the vast majority of dead organisms decay long before any mineral replacement can occur
C) the organic material is destroyed by radioactivity
D) they are destroyed by geological processes before mineral replacement can occur