In which year was the first All India Census attempted and from which

In which year was the first All India Census attempted and from which year did the Decennial Census become a regular feature ?

[amp_mcq option1=”1861 and 1881 respectively” option2=”1776 and 1801 respectively” option3=”1872 and 1881 respectively” option4=”1881 and 1891 respectively” correct=”option3″]