The picture below shows a satellite image of a sea. Picture shows a color-coded map showing the height of the world's ocean surfaces at a particular time. Purple areas correspond to 25 to 35 centimeters below normal. Light blue areas correspond to 5 to 15 centimeters below normal. Gray areas correspond to 0 centimeters above or below normal. Yellow areas correspond to 5 to 15 centimeters above normal. White areas correspond to 35 to 50 centimeters above normal. In this map, the red region is labeled B and the purple region is labeled A.

Which of these statements is correct about the sea at Location A and Location B?