If $57$ is divided by $17$ , then express it in the form of $N=aq+r,$  where $0\le r<a$ .  

Option (A): $19\times 3+0=57+0=57$  correct but they asked divided by $17$ .

Option (B): $57=17\times 4-11=68-11=57$  correct but when it is divided by 17 it leaves reminder 6 and it must be non- negative.

Option (C): $57=17\times 3+6=51+6=57$  correct and also it is divided by $17$  and leaves reminder 6. So answer is C

Option (D): $57=11\times 5+2=55+2=57$ correct but here divided by 11 and leaves reminder 2. So answer is C