Quiz · Protocols and generics · lesson 5 of 9Quiz — extensionsQuestion 1 of 212What can an extension add to a type, and why can't it add a stored property?[A]Anything at all, even a stored var color = "red": the compiler refuses only a stored property that is left without a starting value[B]New abilities, but only for your own types: Int and String are declared in the standard library, so they cannot be extended[C]Computed properties, methods and conformance; a stored property would change what each value is made of, set by the declaration[D]Only computed properties and methods: conformance, like a stored property, has to be written in the type's declaration← BackDefault implementationsNext →Standard protocols
