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In the video "A Successful Day in Court" (accessible under Topic 3), all of the following statements are made about expert evidence except one. Identify the EXCEPTION: Select one: O a. Experts have unique knowledge because of their educational background, training or related experience. O b. A person who claims to be a mechanic will be qualified as an expert notwithstanding what his/her credentials are. O c. An expert witness can give opinion evidence. O d. Before an expert can offer opinion evidence, he/she must be qualified as an expert in a certain field