55. According to the passage, which of the following is correct about some of the potential benefits and concerns associated with the development of artificial intelligence? (A) Benefits: increased efficiency and productivity； Concerns: ethical issues, potential job displacement, safety risks. (B) Benefits: increased reliance on human labor； Concerns: decreased privacy violations and environmental risks. (C) Benefits: improved healthcare outcomes； Concerns: decreased social interactions and potential addiction. (D) Benefits: improved transportation systems； Concerns: decreased innovation and potential security risks.