Nri - rental income only - which itr forms needs to be filled out?

Respected Sirs,

I am an NRI and my only income in India is from a rental property in Chennai. The annual income from this rental is < 2,40,000 INR. I am very unclear on which forms to file. I believe ITR2 is the right one as ITR1 is for residential indians. 

Within IRT2, there are many different sub forms. Can someone please help me to choose which subforms are applicable for my case?

Thanks much!