Read the following passage and answer if the question is true or false.
Passage: Swift uses the same runtime as the extant Objective-C system, but requires iOS 7 or macOS 10.9 or higher. Swift and Objective-C code can be used in one program, and by extension, C and C++ also. In contrast to C, C++ code cannot be used directly from Swift. An Objective-C or C wrapper must be created between Swift and C++. In the case of Objective-C, Swift has considerable access to the object model, and can be used to subclass, extend and use Objective-C code to provide protocol support. The converse is not true: a Swift class cannot be subclassed in Objective-C.

Question: is swift built on top of objective c?

Is the answer True or False? Respond with only "True" or "False" and no additional text.
True
True. Swift is built on top of the Objective-C runtime and can interoperate with Objective-C code.