Consider the following statements about Fakhr-i Mudabbir and his Adabul Harb-wa Shujaat. I. It is a work written on the science of warfare in the early years of Iltutmish's reign. II. Fakhr-i Mudabbir praises highly the swords made in India. III. Mudabbir mentions that the iron was smelted at Khetri in Rajasthan. IV. He offers the earliest known description of the technique of producing Damascus steel. Select the correct answer from the code given below: