f: N rarr N is defined as f(n) = {{:(2"...

`f: N rarr N` is defined as `f(n) = {{:(2","n=3",",k in Z),(10-n","n=3k+1",",k in Z),(0","n=3k+2",",k in Z):}`then `{n in N : f(n) gt 2}=`

A

`{3,6,4}`

B

`{1, 4, 7}`

C

`{4, 7}`

D

`{7}`

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The correct Answer is:

B

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