Vishnu brings a magnet near 3 pins made up of different materials. Pins Y and Z get attracted whereas pin X remains in its places as shown below. What materials are pins X 'Y' and T made up of?

• A. Pin X Pin Y Pin Z Copper Iron Steel
• B. Pin X Pin Y Pin Z Steel Nickel Aluminium                
• C. Pin X Pin Y Pin Z Copper Brass Cobalt                
• D. Pin X Pin Y Pin Z Iron Copper Brass