Which of the following shows a correct prototype and a definition for adding two integers?

• A. Prototype: int add(int a, int b); Definition: int add(int a, int b) { return a + b; }
• B. Prototype: int add(int x, int y); Definition: int add(int a, int b) { return a + b; }
• C. Prototype: void add(int a, int b); Definition: int add(int a, int b) { return a + b; }
• D. Prototype: int add(int a, int b); Definition: void add(int a, int b) { return a + b; }

Answer: (A)