According to the census of India 2011, which of the following is not correct?

Decadal growth rate of rural population has declined in 2001-2011 over 1991-2001.

For every 10 urban dwellers in million plus cities/urban agglomerations, 4 live in 5 such largest cities.

The state of Gujarat has the largest number of cities/urban agglomeration with a population of one million or more.

Sex ratio has increased in 2011 over 2001 in million plus cities.