Which one of the following is an octagonal tomb?

 Q. Which one of the following is an octagonal tomb?

(a) Tomb of Sikandar Lodi

(b) Tomb of Balban

(c) Tomb of Ghiyasuddin Tughlaq

(d) Tomb of Firoz Shah Tughlaq

Ans: (a) Tomb of Sikandar Lodi