Two identical fish, both at sea level, float in two identical aquariums with identical quantities of ...

Two identical fish, both at sea level, float in two identical aquariums with identical quantities of water. Fish A is in Alaska, so it weighs more than fish B at the equator, since g is larger at sea level in Alaska. Which statement is correct?
 a. A comparison is impossible unless they are both floating at the same level.
  b. Fish A displaces a greater quantity of water than fish B.
  c. Fish B displaces a greater quantity of water than fish A.
  d. They both displace the same quantity of water.
  e. Fish A has a smaller acceleration than Fish B when equal horizontal forces are applied to each, because Fish A weighs more.