How is the turtle-headed sea snake different from the greater sea snake?
A.
The turtle-headed sea snake is almost never seen, but the greater sea snake is seen a lot.
B.
The turtle-headed sea snake could be deadly, but the greater sea snake is harmless.
C.
The turtle-headed sea snake has never been studied, but the greater sea snake has been studied.
D.
The turtle-headed sea snake is harmless, but the greater sea snake can be deadly.