Which ONE of the options makes the meaning of ‘savant’ as it emerges in the passage clear?

• A. an autistic who exhibits exceptional skill or brilliance in all fields
• B. a person of learning, especially one with detailed knowledge in some specialized field
• C. an autistic with preternatural abilities, exhibiting exceptional skill or brilliance in a special field
• D. an autistic who exhibits exceptional skill or brilliance in some limited field