There is a story about the moon cake.During the Yuan dynasty, China was ruled by the Mongolian people. Leaders from the preceding Song dynasty were unhappy about being ruled by foreigners, so they began to organize a secret rebellion. The leaders of the rebellion, knowing that the Moon Festival was drawing near, ordered the making of special cakes. Baked into each cake was a message containing the outline of the attack. On the night of the Moon Festival, the rebels successfully attacked and overthrew the government. Today, these cakes are eaten to commemorate this legend and are called Moon Cakes. For generations, moon cakes have been made with sweet fillings of nuts, mashed red beans, lotus-seed paste or Chinese dates, wrapped in pastry. Sometimes a cooked egg yolk can be found in the middle of this rich tasting dessert. Some people have compared moon cakes to the plum puddings and fruit cakes which are served in the English holiday seasons. Nowadays, there are hundreds of varieties of moon cakes on sale a month before the arrival of the Moon Festival. According to this passage, people eat moon cakes on the Moon Festival because  _   .
it is a tradition moon cakes are tasty moon cakes look like the moon people want to remember the rebellion against the Mongolian rulers