The following map shows the average height of ocean waves over a ten-day period. The purple and blue regions that cover most of the Northern Hemisphere experienced very small waves, while the yellow, orange, and red regions that cover a large part of the Southern Hemisphere received much larger waves. Based on the data in the map, which of the following statements is most likely true about the ten-day period when these measurements were made?

A. Tides were stronger in the Southern Hemisphere than in the Northern Hemisphere.

B. The water in the Southern Hemisphere was less dense than the water in the Northern Hemisphere.

C. There were stronger winds in the Southern Hemisphere than in the Northern Hemisphere.

D. The water in the Southern Hemisphere was warmer than the water in the Northern Hemisphere.