In the Film, Rain Man, the Central Character, an Autistic

In the film, Rain Man, the central character, an autistic man, often displays unusual learning, such as the safety records of all the airlines. This behaviour may be seen as

A) fairly typical of autistic people who often engage in unusual preoccupations.
B) quite different from any behaviours actually shown by persons with autism.
C) reflective of the rare and seldom understood autistic savants.
D) a universal trait in persons with autism.
E) unusual for people with autism and only used to advance the plot of the film.