(A) - (II), (B) - (III), (C) - (IV), (D) - (I) → Lord Curzon served 1898-1904 (matches II), Lord Irwin served 1926-1931 (matches III), Lord Canning was the first Viceroy 1858-1862 (matches IV), and Lord Mayo served 1869-1872 (matches I). This is the historically accurate matching of all four Viceroys with their respective terms. → correct