Stockton spent his childhood in an age when tall tale was the most popular genre of American literature. A tall tale is（）.

A.a long story about the American frontiers or cowboys

B.a story with unbelievable elements, related as if it were true and factual

C.a story with intricate plot and a fairytale-like ending

D.a story presented in refined language of the upper class

正确答案：a story with unbelievable elements, related as if it were true and factual