A tech company has developed a case for the iPhone that includes a keyboard that is the same design ...

A tech company has developed a case for the iPhone that includes a keyboard that is the same design and lay-out as the Blackberry phone. The product was developed as a result of users missing their Blackberry keyboard when they switched to the iPhone technology. Blackberry has brought suit against the tech company. Which of the following is correct?
 A) The tech company has used a trade secret without authorization and is liable to Blackberry.
 B) The tech company has infringed on Blackberry's patent and Blackberry is entitled to damages.
 C) The tech company has infringed on Blackberry's copyright and is entitled to damages.
 D) There is no infringement in the development of a similar keyboard.