# Which is true?

How many of the following statements is/are true?

A) The remainder when the square of any number is divided by 4 is 1 or 0.

B) There is no natural number for which $$4^{n}$$ ends with digit zero.

C) A positive integer n is prime, if no prime p is less than or equal to $$\sqrt{n}$$ divides n.

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