If m=n and p < q, which of the following must be true?

If \(m=n\) and \(p < q\), which of the following must be true? (A) \(m – p > n – q\) (B) \(p – m > q – n\) (C) \(m – p < n – q\) (D) \(mp > nq\) (E) \(m + q < n + p\) Source: Master GMAT