Instructions: In this task, you're given a question, a context passage, and four options which are terms from the passage. After reading a passage, you will get a brief understanding of the terms. Your job is to determine by searching and reading further information of which term you can answer the question. Indicate your choice as 'a', 'b', 'c', or 'd'. If you think more than one option is plausible, choose the more probable option to help you answer the question.
Input: Question: What year was the Pilot released? Passage:Barry Allen's first appearance on The Flash is in the episode "Pilot". Barry is introduced as quite a goofy and kind character, who is quite brilliant at his job as a crime scene investigator for the Central City Police department. His obsession for the particle accelerator and interest in Harrison Wells began before his superhuman abilities. After the explosion that consequently led to Barry being struck by lightning, he wakes up and discovers that he has developed meta-human abilities, in particular the power of speed. This season portrays Barry's development in his superpowers, he has his setbacks in the beginning, in "Fastest Man Alive" he begins fainting, which he only finds out later that it is because his body is burning more energy than he could intake. Throughout the episode, Barry's character develops and he is able to better control his powers through training at the S.T.A.R Labs, with his team the STAR team: Caitlin Snow, Cisco Ramon and Harrison Wells. Barry's once platonic (at least to Iris West) relationship with Iris is turned complicated after all the episode "The Man in the Yellow Suit" when Barry confesses his love to her. In the episode "Crazy for You" however, Barry begins a relationship with Linda Park, who in the next episode suspects that Barry is still in love with Iris West. Over the course of the second half of the season, Barry begins to suspect and learns that Wells is actually the man in the yellow suit that killed his mother, otherwise known by his true name Eobard Thawne, whom had been manipulating events since that night to turn Barry into The Flash in an effort to harness his speed and return to the future. Eobard ultimately fails and is erased from existence by his distant ancestor, Eddie Thawne when Eddie kills himself. This provides an effort to allow Barry to travel to the past and save his mother. However, doing so results in a singularity opening above Central City which Barry then has to stop.
Links: a. Particle accelerator b. List of The Flash characters c. Pilot (The Flash) d. Central City Police Department
Output:
c