Sherlock Holmes is a fictitious private detective created by British author Sir Arthur Conan Doyle. Referring to himself as a "consulting detective" in the stories, Holmes is known for his expertise with observation, forensic science, and logical reasoning that borders on the fantasy, which he employs when investigating cases for a wide variety of clients, including Scotland Yard.
First performing in print in 1887's “A Study in Scarlet”, the character's acceptance became well-known with the first series of short stories in The Strand Magazine, beginning with "A Scandal in Bohemia" in 1891; other tales appeared from then until 1927, eventually totaling four novels and 56 short stories. All but one are set in the Victorian or Edwardian eras, between about 1880 and 1914. Most are reported by the character of Holmes's friend and biographer Dr. Watson, who usually accompanies Holmes during his investigations and often shares quarters with him at the address of 221B Baker Street, London, where many of the stories begin.
Having mentioned that Holmes used his observation skills and acute logical reasoning more than a scientific approach, we can conclude that the answer to the question is:
B. Forensic science is a complicated process that relies too much on human perception and not enough on actual scientific evidence.
