Consider the following statement. If r is any rational number and s is any irrational number, then is irrational. (a) Which of the following is a negation for the statement? O There is a rational number r and an irrational number s such that is rational. O If r is any rational number and s is any irrational number, then is rational. S r O If r is any irrational number and s is any rational number, then is irrational. O There is a rational number r and an irrational number s such that - is irrational. (b) What are some values of r and s for which the give statement is false (that is, for which its negation is true)? (r, s) = |

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