Consider the following statements in respect of the Bhoj Wetland:

1. Since August 2002, it is recognized as a wetland of international importance under the Ramsar Convention.

2. The upper lake, created by King Bhoj in the 11th century, is one of the oldest large man-made lakes in central India.

3. The lower lake was created in 1794 by Nawab Chhote Khan to beautify the city.

How many of the statements given above are correct?