Explanation:

Both 1 and 2

Temperate cyclones can originate over both land and sea.

This statement is correct. Temperate cyclones, also known as extratropical cyclones or mid-latitude cyclones, can form over both land and sea. They typically form along the boundaries between contrasting air masses and are often associated with frontal systems.

Tropical cyclones originate only over the sea.

This statement is also correct. Tropical cyclones, including hurricanes and typhoons, require warm ocean water as a heat source to fuel their development. Therefore, they generally originate over warm tropical oceans.

Therefore, the correct option is 3 (Both 1 and 2).