Which of the following is true of the Mongol Empire's conquest of the Song Dynasty: HINT - CHOOSE FOUR. Group of answer choices

The Song Dynasty was conquered by the grandson of Genghis Khan.

While the Mongols (the Yuan dynasty) ruled over China, they stopped the civil service exams.

The Mongols shut down the Silk Road for nearly 100 years while they ruled over China.

The Mongols usually allowed people to practice their own religions.

The Mongols did not mix with the Chinese.

The Mongols never defeated the Song Dynasty due to powerful ocean storms known as tsunami.

Please help ASAP!!!