Which of these divisibility rules can be applied to determine if 315 is a prime or composite number?
A A number is divisible by 4 if the last two digits are divisible by 4.
B None of these rules can be applied because 315 is a prime number.
C A number is divisible by 9 if the sum of its digits is divisible by 9.
D A number is divisible by 6 if it is divisible by 2 and 3.
AWNSER PLEASE
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