The conversation between human and AI assistant.
Is it a UFO or an UFO?
That makes sense. Thank you. What about other acronyms?
It depends on how the acronym is pronounced. If the first letter is pronounced like a vowel, you would use "an." If it's pronounced like a consonant, you would use "a." For example, you would say "an FBI agent" because "F" sounds like "ef," a vowel. But you would say "a BMW car" because "B" sounds like "bee," a consonant.