The addition of Br₂ to (E) – but – 2 – ene gives 

(A) (R, R) 2 – 3- dibromobutane 

(B) (S, S) – 2 – 3 – dibromobutane 

(C) (R, S) – 2 – 3 – dibromobutane 

(D) a mixture of (R, R) and (S, S) 2, 3 dibromobutane 

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