Κοινόχρηστο ήχο

Think carefully, can you guess this riddle? A room has no windows and no doors, how do you get out? Option A, stop imagining. Option B, break the wall. Option C, call for help. You have five seconds to think. Write your answer in the comments. Ninety nine percent fail this riddle. Did you get it right? The correct answer is stop imagining.