Which of the following is not true about Sawai Jai Singh of Amber?

Q. Which of the following is not true about Sawai Jai Singh of Amber?

(a) He erected scientific observatories at Delhi, Jaipur, Ujjain, Varanasi and Mathura

(b) He wrote a book on astronomy called ‘Ziz Muhammadashai’

(c) He performed two Ashwamedha sacrifices

(d) He signed the subsidiary alliance with the British

Ans: (a) He erected scientific observatories at Delhi, Jaipur, Ujjain, Varanasi and Mathura