Q: Ethanol is converted into ethoxy ethane,

• A. by heating excess of ethanol with conc. H2SO4 at 140°C
• B. by treating with conc. H2SO4 at room temperature
• C. by treating with conc. H2SO4 at 273 K
• D. by heating Ethanol with excess of conc. H2SO4 at 443 K