Which of the following is true regarding the structure of the intermediate and the final product in the reaction between bromine and cis-stilbene (cis-1,2-diphenylethene) (1) shown below? (1) a. the reaction proceeds via the intermediate structure (2), to give the product structure (4). b. the reaction proceeds via the intermediate structure (3), to give the product structure (5). c. the reaction proceeds via the intermediate structure (3), to give the product structure (4). d. the reaction proceeds via the intermediate structure (2), to give the product structure