Consider the following statements with regards to Kalibangan ancient civilization : (a) The ancient Drishadvati and Saraswati river valley cradled this civilization. (b) This civilization is situated in Rajsamand district. (c) Amalanand Ghose was first to report this site in 1952. (d) In 1961-62, B.B. Lal and B.K. Thapar under took the excavation here. Choose the most appropriate answer from the options given below :