Some Fossils, Particular Plant Fossils, Are Moulds or Impressions

Multiple Choice

Some fossils, particular plant fossils, are moulds or impressions. Why may the three-dimensional analysis of these fossils be difficult?

A) because these organisms may have been compressed shortly after death
B) because these organisms may have been compressed long after death
C) because these organisms may have been compressed while still being alive
D) because these organisms may have been compressed dissolved