The correct answer is All the above. Thomas MunroHe was a Scottish soldier and colonial administrator. He served as an East India Company army officer and statesman. He was appointed as the governor of the Madras Presidency. He is regarded as the father of the Ryotwari system. Arthur CottonHe was a British general and irrigation engineer. He devoted his life to the construction of irrigation and navigation canals throughout British India. Sir Arthur Cotton Museum has been built in his honour in Rajamahendravaram, Andra Pradesh. C. P. BrownHe was a joint collector of the Kadapa district of Andhra Pradesh from 1820 to 1822 and a court registrar from 1826 to 1829 during the British regime.