Consider the following statements :

1. n3 - n is divisible by 6.

2. n- n is divisible by 5.

3. n5 - 5n3 + 4n is divisible by 120.

Which of the statements given above are correct ? 

1
1 and 2 only  
2
2 and 3 only 
3
1 and 3 only  
4
1, 2 and 3  

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