The refectory opens at 6:30 a. m. to serve breakfast which must be ordered by 9:30 a. m. Lunch is served between 11:45 a. m. and 2:30 p. m. Dinner is served between 6:00 p. m. and 8:30 p. m. Guests can be accommodated at lunchtimes and dinnertimes provided that 24 hours notice has been given. Vegetarian options are always available but vegans should notify the catering coordinator at the beginning of each term as should anyone with special dietary requirements. This includes nut, gluten and soybean allergies etc.

Question: Dinner can be ordered before 6:00 p. m.
Options:
A. true, B. false, C. uncertain
Answer: "C"