38. It can be inferred that flood plains, deltas, and stream channels (lines 13-14) are similar inwhich of the following ways?
(A) Animals rather than plants have been preserved at such locations.
(B) Such locations are likely to be rich sources of fossils.
(C) Fossilized human remains are only rarely found in such locations.
(D) Rapid sedimentation in such locations makes it difficult to locate fossils.