An organic compound `(a)` reacts with sodium metal and forms `(b)`. On heating with conc. `H_(2)S0_(4)` (a) gives diethyl ether. `(a)` and `(b)` are respectively
A. `C_(2)H_(5)OH and C_(2)H_(5)O Na`
B. `C_(3)H_(7)OH and C_(3)H_(7)O Na`
C. `CH_(3)OH and CH_(3)O Na`
D. `C_(4)H_(9)OH and C_(4)H_(9)O Na`