When Asha suspended four bars of different materials from a pole and brought the North pole of a bar magnet near part P and Q of each bar one by one as shown in figure, then observations she recorded are as follows: Bar Part P Part Q I Pushed Pulled II Nothing happened Nothing happened III Pulled Pushed IV Pulled Pulled Which of the following sets correctly represents metal bars I, II, III and IV?

• A. Bar I Bar II Bar III Bar IV  Magnet Stainless steel Bar Magnet Iron bar
• B. Bar I Bar II Bar III Bar IV  Magnet Iron bar Magnet Glass bar
• C. Bar I Bar II Bar III Bar IV   Magnet Iron bar Magnet
• D. Bar I Bar II Bar III Bar IV  Magnet Iron bar Glass bar Stainless steel Bar