Diethyl ether on heating with conc. HI gives two moles of

Given data : It is given to identify  the product when Diethyl ether is on heating with conc. $HI$.
It is formed when diethyl ether is heated with concentrated sulfuric acid. Propylene glycol The acetic acid Only ethyl alcohol, ethyl hydrogen sulfate, and ethanol
Diethyl ether on heating with conc. HI gives ethyl iodide and the chemical reaction is as follows. 
$C{H}_{3}C{H}_{2}OC{H}_{2}C{H}_3+2HI\to 2C{H}_{3}C{H}_{2}I+H_{2}O$
Hence, the correct option (C). Ethyl iodide.