House property

Dharmendra kumar Rajpoot (63 Points)

08 October 2020  
if an assessee earns rent from a sub-tenent in respect to tenanted property, let out as a residence. the said rent is -
1. exempted u/s 10
2. taxable the under the head income from house property.
3. taxable as business income, as the letting out is commercial activity.
4. taxable as income from other sources

which one is correct ans. pls