In the following questions, each question is followed by data in the form of two statements labeled as I and II. You must decide whether the data given in the statements are sufficient to answer the questions. Using the data make an appropriate choice from (a) to (d) as per the following guidelines:

Question 2

If x and y are integers, is $$\sqrt{x^2 + y^2}$$ an integer?

I. $$8x^2 - y^2 = 0$$

II. $$x^2 + y^2$$ is an integer

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