Who among the following did not contribute to building the famous ‘Qutb-Minar’?

Who amongst the following Sultans built the fifth storey of Qutb Minar?

Who among the following paid his soldiers in cash?

Who among the following introduced the famous Persian festival ‘Navroz’ in India?

Who among the following started ‘Tanka’ silver coin?

Who among the following rulers, ruled for the maximum period?