Which one among the following is not the characteristic feature of the Harappan settlement?

• Correct answer
  A

  Doorways and windows generally faced the side lanes and rarely opened onto the main streets
• B

  Houses generally had separate bathing areas and toilets
• C

  The citadel was walled but the lower town was not walled
• D

  Drains and water chutes from the second storey were often built inside the wall

Hence, the correct answer is option: 'A'.