Which of the following statements is NOT correct?
AA number is divisible by 11 if the sum of its digits is divisible by 11.
BA number is divisible by 3 or 9 if the sum of digits is divisible by 3 or 9, respectively.
CA number is divisible by 6 if the sum of its digits is divisible by 3 and the digit at unit place is an even digit.
DA number is divisible by 5 if the digit at unit place is 5 or 0.