Let A be the set of non-negative integers, I is the set of integers, B is the set of non-positive integers, E is the set of even integers and P is the set of prime numbers then.

• A

  $I-A=B$

• B

  $A\cap B=\varphi$

• C

  $E\cap P=\varphi$

• D

  $A\Delta B=I-\left\{0\right\}$