Ethanol can be converted to propane nitrile `(CH_(3)CH_(2)CN)` bby the following reaction (s)` :`
A. `CH_(3)CH_(2)CH_(2)OH +KCN overset(Delta)(rarr)`
B. `CH_(3)CH_(2)OH+HCNoverset(Delta)(rarr)`
C. `CH_(3)CH_(2)OHunderset("Pyridine")overset(TsCl)(rarr)CH_(3)CH_(2)OTsoverset(KCN)(rarr)`
D. `CH_(3)CH_(2)OHunderset((-POCl_(3),-HCl))overset(PCl_(5))(rarr)CH_(3)CH_(2)Clunderset((-NaCl))overset(NaCN)(rarr)CH_(3)CH_(2)CN`
