Hydrocarbon (A) is obtained when 1,2-dibromoethane reacts with alcoholic KOH. (A) decolourizes alkaline KMnO4 solution. (A) contains acidic hydrogen. Identify (A) with reason.
a. Ethene, due to its double bond
b. Ethanol, due to its -OH group
c. Methane, due to its single bond
d. Propane, due to its triple bond
