How can I restrict my iOS Project to iPhone 4 Only

Question

I\'m using a barcode scanner library within my iOS project that currently only supports iPhone 4 devices. Is it possible to restrict the application submission so that only

Answer 1

In your Xcode target configuration, under the Deployment group, change the iOS Deployment Target to the desired version. This will not cause a rejection of your app.

Edit: The original question was ambiguous. This answer refers to how to restrict your app to iOS 4.