A company wants to use a Large Language Model (LLM) to improve business productivity. The company is unsure of the tradeoffs between the various approaches to LLM customization.
Select and order the LLM customization approaches from the following list from the LEAST operational overhead to the MOST operational overhead. Each LLM customization approach should be selected one time. (Select and order FOUR).
A: Train a fine-tuned model
B: Perform prompt engineering on LLM
C: Select and use a Specific LLM
D: Pre-train a new LLM