Which of the following statements about Harappan culture are correct?
A. Most Harappan sites are located in semi-arid lands, where irrigation was required for agriculture.
B. Traces of canals have been found at the Harappan site of Shortughat in Afghanistan, but not in Punjab or Sind.
C. Mohenjodaro is the most well-known site of Harappan culture, however the first site to be discovered was Harappa.
D. The Citadel was an extension of the lower town at the same surface level and was never separated physically from the lower town.
E. The Citadel at Lothal was walled off, though built at a lower surface level.

Choose the correct answer from the options given below:
1. C, D, E only
2. A, D, E only
3. A, B, C only
4. B, C, E only

3

The correct answer is: 3. A, B, C only

D. The Citadel was an extension of the lower town at the same surface level and was never separated physically from the lower town.
This statement is incorrect. The Citadel and the Lower Town at Harappan sites were distinct areas, and the Citadel was often elevated compared to the Lower Town. There was a physical separation between the Citadel and the Lower Town.

E. The Citadel at Lothal was walled off, though built at a lower surface level.
This statement is incorrect. While most Harappan settlements have a small high western part and a larger lower eastern section, there are variations. At sites such as Dholavira and Lothal (Gujarat), the entire settlement was fortified, and sections within the town were also separated by walls. The Citadel within Lothal was not walled off, but was built at a height