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 +C_(2)H_(5)ONa`
B. `C_(3)H_(7)OH`and `C_(3)H_(7)ONa`
C. `CH_(3)OH+CH_(3)ONa`
D. `C_(4)H_(9)OH` and `C_(4)H_(9)ONa`