Which one is the correct order of acidity?

1.	Which one is the correct order of acidity?
Answer» `CH_2 = CH_2 GT CH_3 - CH = CH_2 gt CH_3 - C -= CH gt CH -= CH` `CH -= CH gt CH_3 - C = CH gt CH_2 = CH_2 gt CH_3 - CH_3` `CH -= CH gt CH_2 gt CH_2 gt CH_3 - C -= CH gt CH_3 - CH_3` `CH_3 - CH_3 gt CH_2 = CH_2 gt CH_3 - C -= CH gt CH -= CH` ANSWER :B

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