Eithyl chloride reacts with sodium ethoxide to form a compound A. Which of the following reactions also yields A?

Question

\[\begin {array} {1 1} (a)\;C_2H_5Cl.KOH(alc). \Delta & \quad (b)\;2C_2H_5OH,cone.H_2SO_4,140^{\circ} C \\ (c)\;C_2H_5Cl.Mg(dry \;ether) & \quad (d)\;C_2H_2 dil H_2SO_4.HgSO_4 \end {array}\]