IV. Look at the signs. Choose the best answer (A, B, C or D) for questions 15 and 16. (0.5 pt) 15. What does the sign mean? A. Be careful! No horn B. You must honk your horn. C. No traffic D. No entry 16. What does the sign mean? A. There is a hospital. B. There is a museum. C. There is a stadium. D. There is a market.