I have build my project in iPhone sdk 3.0. I have used frameworks that is not available in iPhone sdk 2.2.1.
While they're uploading on App Store there is one option
Choose you device type for users running in iPhone os 2.2.1 and below:
option 1) iPhone only
option 2) iPhone and iPod touch(2nd generation)
option 3) iPhone and iPod touch
and this question is mandatory.
Have a look at following link it is screenshot of that:
http://img520.imageshack.us/img520/2509/image001fwb.jpg
The problem is my application may not run on devices which are using os version below 3.0. Which option should I go for?