What are the rules for dividing each number from 1 to 10

Any integer (not a fraction) is divisible by 1 The sum of the digits is divisible by 3 The last 2 digits are divisible by 4 The last digit is 0 or 5 Is even and is divisible by 3 (it passes both the 2 rule and 3 rule above) Double the last digit and subtract it from a number made by the other digits. The result must be divisible by 7. (We can apply this rule to that answer again) The last three digits are divisible by 8 The sum of the digits is divisible by 9 The number ends in 0 Add and subtract digits in an alternating pattern (add digit, subtract next digit, add next digit, etc). Then check if that answer is divisible by 11. The number is divisible by both 3 and 4 (it passes both the 3 rule and 4 rule above)

What mathematical statement is missing ? ? the answer is b