Q15. Which of the following statement is true? < I. p + q = p + q when p≥ 0 and q ≥ 0< II. |pq|lp|lq| when p ≤ 0,q ≤ 0 and [p] ≥ |q|< = III. |pq|≤||pl|al| (a) I and II are correct (b) II and III are correct (c) I and III are correct

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