Which of the chronological order for the construction of the following is correct?

Q. Which of the chronological order for the construction of the following is correct?

1. Taj Mahal

2. Qutab Minar

3. Fatehpur Sikri

4. Agra Fort

Select the correct answer from the codes given below :

(a) 2, 4, 3, 1

(b) 2, 4, 1, 3

(c) 1, 2, 3, 4

(d) 2, 3, 4, 1

Ans: (a) 2, 4, 3, 1