Marine fossils belonging to the early Cenozoic era are found only in the southern parts of Mississippi. What does this evidence say about the state during this period?
A) The state was flooded by tropical seas during this period.
B) The northern parts of the state were probably above sea level.
C) The Mississippi River had a different course during this period.
D) The marine animals did not like the weather in the northern parts. PL HELP 20 POINTS