If \(\frac{1}{x}\) is a positive fraction and \(\frac{1}{y}\) is a negative fraction, then which of the following statements are true? (A) \(\frac{1}{x} + \frac{1}{y}\) is positive (B) \(\frac{1}{x} - \frac{1}{y}\) is positive (C) \(\frac{x - y}{xy}\) is negative (D) \(\frac{1}{xy}\) is positive (E) \(\frac{1}{x} - \frac{1}{y}\) is positive