Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks

ChatGPT: New AI chatbot has everyone talking to it
A new chatbot has passed one million users in less than a week, the project behind it says. ChatGPT was publicly released on Wednesday by OpenAI, an artificial intelligence research firm whose founders included Elon Musk. ChatGPT is the latest in a series of Als which the firm refers to as GPTS, an acronym which ___(1)___ for Generative Pre-Trained Transformer.
To develop the system, an early version was fine-tuned through conversations with human trainers. The system also learned from access to Twitter data according to a tweet from Elon Musk, ___(2)___ is no longer part of OpenAl's board. The Twitter boss wrote that he had paused access "for now". The results have impressed ___(3)___ people who have tried out the chatbot. OpenAl chief executive Sam Altman revealed the level of interest in the artificial conversationalist in a tweet. The project says the chat format allows the Al to answer "follow-up questions, admit its mistakes, challenge incorrect premises and reject inappropriate requests".
A journalist for technology news site Mashable who tried out ChatGPT reported it is hard to provoke the model into saying offensive things. ___(4)___, OpenAl warns that "ChatGPT sometimes writes plausible- sounding but incorrect or nonsensical answers". Training the model to be more cautious, says the firm, causes I to decline to answer questions that it can answer correctly. Briefly questioned by the BBC for this article, ChatGPT revealed itself to be a cautious interviewee ___(5)___ of expressing itself clearly and accurately in English.
(Adapted from https://www.bbc.com/news/technology)