The correct option is C In spite of nature's fury over centuries, the pillar has not corroded
The Iron Pillar at Mehrauli, Delhi was built by Chandragupta Vikramaditya. This pillar is made of iron, 7.2 m high, and weighs over 3 tonnes. This was made about 1500 years ago and still, it has not to rust in all these years. This monument is an example of the great craftsmanship of the ironworkers during the Gupta period.