21 August 2002 - mystery quiz

What do you think is the greatest mystery?

A. I can understand Athena springing from Zeus’s brow, but where did the palace come from?
B. I don’t get these partial differential equations. How’m I supposed to solve it if they don’t even give me the whole equation?
C. Never get involved in a land war in Asia. Why did nobody tell that to Sun Tzu?
D. What is this Crimea river that people sing about?