23. When 1 mole of anbydrous HC1 is reacted with excess 1,3-pentadiene, the 1,2 and the 1,4-addition products are formed. Which of the following structures below is the least likely to be one of these products? (Note: When a chiral carbon is formed in this reaction, a racemic mixture results, but only one of the two possible enantiomers is shown.)
(A)