Hi Bobby, thanks for asking a question here on Brainly.
If no price ceiling exists and a market is in equilibrium, then a price ceiling is established which is below the market equilibrium that results in a shortage.
Answer: Letter B ✅
Hope that helps! ★ If you have further questions about this question or need more help, feel free to comment below or leave me a PM. -UnicornFudge aka Nadia