Which of the following molecules has the shortest carbon single bond l

1.	Which of the following molecules has the shortest carbon single bond length ?
Answer» `CH_(2) = CH - oversetoverset(O)("\|\|")C -OH` `CH_(2) = CH - C -=N` `CH_(2) = CH - CH = O` `CH_(2) = CH - CH = CH_(2)` ANSWER :B

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