Indentify the reagents (1-4), required for the transformations shown and arrange them in correct order.
(1) `LAH (LiAlH_(4))" "` (2) `OsO_(4)`
(3) `NaIO_(4)" "` (4) `NaBH_(4)`
A. `1 rarr 3 rarr 4 rarr 2`
B. `2 rarr 3 rarr 1 rarr 4`
C. `2 rarr 1 rarr 3 rarr 4`
D. `1 rarr 2 rarr 3 rarr 4`