Which of the following statements about the Harappan city Dholavira is/are correct?

1. Many Harappan sites had a walled middle city and lower city made of sandstone or limestone rather than mud bricks.

2. Funerary architecture featuring nine gateways and tomb stupas with unique designs - Hemispherical structures resembling Buddhist stupas are some of the unique features of the Dholavira site.

3. Currently, it is located in Uttar Pradesh in India.