Consider the following statements regarding the urban morphology of Harappan cities:
1. The settlement of Dholavira in Gujarat is uniquely divided into three distinct structural parts: a Citadel, a Middle Town, and a Lower Town, all fortified by massive stone walls.
2. Unlike standard Harappan grid plans, Lothal exhibits a single fortified complex without any distinct grid separation between residential zones and the dockyard.
Which of the statements given above is/are correct?