See the multi-choice question below:

Sentence 1: Noting the fossil's eel-like tail and other aquatic attributes, Lee and Caldwell suggest that these proto-snakes retreated into the water, shed their legs, then slithered back out.

Sentence 2: Others have suggested that the fossil's aquatic attributes represent another species altogether.

If the first sentence is true, then is the second sentence true?
Options:
A). yes
B). it is not possible to tell
C). no
B).