Parts of the following sentence have been given as options. Select the option that contains an error.
Dementia effects about 7 million / people in India, which is 1% of the population / aged above 60 and this number / is set to increase as the population ages.
1
people in India, which is 1% of the population
2
aged above 60 and this number
3
is set to increase as the population ages
4
Dementia effects about 7 million