Each of the Following Supports the Belief That Large Amounts

Multiple Choice

Each of the following supports the belief that large amounts of liquid water once existed on Mars EXCEPT one. Which is the exception?

A) Evaporites have been found on the surface.
B) There is a deficiency of neutrons (produced in collisions of cosmic rays with rocks below the surface) escaping from the surface.
C) Mud slides seem to follow some meteoric impacts.
D) Scientists have found few carbonate rocks on Mars.