What is the greatest 6-digit number when divided by 8 , 9, and 10 leaves a remainder of 6, 7, and 8 respectively?	Choose the correct option
A) 456780	B) 678918	C) 997479	D) 997916	E) 997920

Rationale: when you divide a positive integer by 10 , the remainder will just be the units digit . we know the remainder is 8 when we divide by 10 , so b is the only possible answer .
Answer: B