f :N rarr Z is defined byf(n)={(2,"if" n...

`f :N rarr Z is defined by`f(n)={(2,"if" n=3k,k in z),(10-n,"if"n=3k+1,k in z),(0, if 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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