Ethy1 alcohol `(C_(2)H_(5)OH)` has higher boiling point than dimethyl ether `(CH_(3)-O-CH_(3))` although the molecular weight of both are same .
A. hydrogen bonding in ethanol
B. hydrogen bonding in dimeyl ether
C. `CH_(3)` group in ethanol
D. `CH_(3)` group in dimethyl ether