The Museum of Natural History is one of the most interesting museums at the University of

The first thing visitors see from the museum's main entrance on the fourth floor is a very large display called a panorama. This exhibit of North American plants and animals was L. L. Dyche's collection. Down one floor is a large collection of fossils found in the Kansas area. On the fifth floor, visitors can learn about North American Indians. Going up one more floor, visitors can see a working beehive, live snakes, stuffed fish and birds, and many other displays of Kansas plants and animals.

Where is the museum's main entrance？

A．On the third floor.

B．On the fourth floor.

C．On the fifth floor.

D．On the sixth floor.