Which one of the following pairs is correctly matched ?
(A) Kanpur - Kunwar Singh: Kunwar Singh was from Bihar, and not from Kanpur where the revolt was led by Nana Saheb and Tantya Tope.
(B) Bihar - Gonoo: Gonoo, also called Geynu, was a tribal leader of the Kol rebellion from Singhbhum in Jharkhand, and not Bihar.
(C) Lucknow - Birjis Qadr: Birjis Qadr was the son of the Nawab of Awadh, and led the revolt from Lucknow, and therefore the option is correct.
(D) Singhbhum - Nana Saheb: Nana Saheb led the revolt from Kanpur, and was not associated with Singhbhum.

A ladder of fixed length \( h \) is to be placed along the wall such that it is free to move along the height of the wall.
Based upon the above information, answer the following questions:
(iii) (b) If the foot of the ladder, whose length is 5 m, is being pulled towards the wall such that the rate of decrease of distance \( y \) is \( 2 \, \text{m/s} \), then at what rate is the height on the wall \( x \) increasing when the foot of the ladder is 3 m away from the wall?