Paleontologists have discovered fossils of centipedes that are 414 million years old. These fossils are at least 20 million years older than the earliest land-dwelling animals previously identified. The paleontologists are confident that these centipedes lived on land, even though the fossilized centipedes were discovered in rock that also contained fossilized remains of animals known to be water-dwelling.

The paleontologists' view would be LEAST supported by the truth of which one of the following?

(A) The legs of the fossilized centipedes were particularly suited to being a means of locomotion on land.

(B) All of the centipedes that had previously been discovered were land dwellers.

(C) The rock in which the fossilized centipedes were found was formed from mud flats that were occasionally covered by river water.

(D) Fossils of the earliest land-dwelling animals that had previously been identified were found in rock that did not contain fossilized remains of water-dwelling animals.

(E) Fossils of spiders with respiratory systems adapted only to breathing air were found in the same rock as the centipede fossils.

Source: LSAT
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I will go with D here :

(C) The rock in which the fossilized centipedes were found was formed from mud flats that were occasionally covered by river water--this actually support the Paleontologists .It says that the rock that has been found was formed from mud flats that were occasionally (not most) covered by river water, so there may be chances , some of the water animals got fossilized...

(D) Fossils of the earliest land-dwelling animals that had previously been identified were found in rock that did not contain fossilized remains of water-dwelling animals. ---So what , it did not resolve the contention that why this time we have water animal fossilized in rock or Is centipedes are water dwelling ???

confused between D and E but I think I will go with D because option E states the possibility of centipede being land dweller by mentioning that the same rock had a spider fossil which was a land dweller along with centipede fossil and water dwelling animal fossil.

I am confused between B and D.
B conclusion of "All of the centipedes that had previously been discovered were land dwellers." gives no proof that this will also be a land dweller.
Can someone explain
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