Some pen are clips.
Some clips are pin.
I. Some pins are pens
II. No pin is a pen
|A||If only conclusion I follows|
|B||If only conclusion II follows|
|C||If either conclusion I or II follows|
|D||If neither conclusion I nor II follows|
|E||If both conclusions I and II follow|
Neither I nor II follows but I and II is a complementary pair.