$($a$)$ An article in the Economist magazine notes that many economists believe that GDP

data for India are unreliable because $$the average firm employs just a handful of

people and the overwhelming majority of the adult population works off the books

and far from major cities.$$

i$.$

What does the article mean by working $$off the books$?$

$(2$ Marks$)$

ii$.$ Why would the problems listed make it difficult for the Indian government to

accurately measure GDP$?$

$(2$ Marks$)$

iii. What problems can be caused for a government or for businesses in a country

if the government cannot accurately measure GDP