It is given that,  A is an NP – complete problem and B and C be two other problems not known to be in NP. B is polynomial time reducible to A and A is polynomial – time reducible to C. Which one of the following statements is true?

1
C is NP – hard
2
B is NP – complete
3
B is NP – hard
4
C is NP – complete
5
Question Not Attempted

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