trans-2,3-dimethyloxirane can react with hydrochloric acid to form 3-chlorn-3-hutannt (a) How many total stereoisomers are possible for 3-chloro-2-butanol ? (b) Given that opening of the epoxide ring in this reaction is stereoselective, provide the names (using IUPAC guidelines) of the only two isomeric products formed. product 1: 3-chloro-2-butanol product 2: 3-chloro-2-butanol \begin{tabular}{|l|} \hline (2R 3S) \\ \hline(3S4R) \\ (3R4S) \\ (2S3S) \\ (2R3R) \\ (3S4S) \\ (3R4R) \\ (1R2R) \\ (152S) \\ (1R2S) \\ (1S2R) \\ \hline \end{tabular} 7 item attempts remsining From the choices given below, list the reagent(s) in the order needed to achieve the given transformations. List your answer as a single letter (single-step transformation) or a series of letters (multi-step transformation) with no commas separating them. For example, "hg". Note: The order in which you list your letters matters! (a) Starting with cis-3-hexene, show how to prepare meso-3,4-hexanediol. (b) Starting with trans-2-butene, show how to prepare racemic 2,3-butanediol