According to historical accounts and surveys, the Chittorgarh Fort originally housed approximately how many water bodies or reservoirs?

Arrange the following structural components of Sher Shah Suri's tomb at Sasaram in the correct vertical sequence, starting from the base and moving upwards: I. The sphere (dome) II. The main building comprising an octagonal chamber surrounded by an arcade III. The stepped square plinth on a terrace Choose the correct answer from the options given below:

Which of the following monuments was constructed and expanded in stages by Qutb-ud-din Aibak, Iltutmish, and Alauddin Khalji?