Who owns the copyrights and intellectual property rights to the material in the SDK?

a. The developer.
b. Google and third parties.
c. Android development leads.
d. The SDK is open source and not under copyright.

b. Google and third parties.
Google (as the copyright holder of Android) grants you a limited, worldwide, royalty-free, nonassignable, and nonexclusive license to use the SDK solely to develop applications for the Android platform. Google (and third-party contributors) are granting you license, but they still hold all copyrights and intellectual property rights to the material. Using the Android SDK does not grant you permission to use any Google brands, logos, or trade names. You may not remove any of the copyright notices therein. Third-party applications that your applications interact with (other Android apps) are subject to separate terms and fall outside this agreement.