求助TPO2 听力第14题——答案有误？

menglishuixiangUID: 2875988

如题。
According to the professor, how did Painleves films confuse the audience?
A they show animals out of their natural habitat.
B they depict animals as having both human and animal characteristics.
C  The narration is scientific and difficult to understand
D  the audiences of the 1920s and 1930s were not used to films shot underwater.
为什么答案是D不是B呢？