For each of the following reactions, draw the major elimination product; if the product can exist as stereoisomers, indicate which stereoisomer is obtained in greater yield. a. (R)-2-bromohexane + high concentration ofCH_3O^-,CH 3​ O − ,b. (R)-3-bromo-3-methylhexane +CH_3OH,CH 3​ OH,c. trans-1-chloro-2-methylcyclohexane + high concentration ofCH_3O^-CH 3​ O − . d. trans-1-chloro-3-methylcyclohexane + high concentration ofCH_3O^-,CH 3​ O − ,e. 3-bromo-3-methylpentane + high concentration ofCH_3CH_2O^-CH 3​ CH 2​ O − f. 3-bromo-3-methylpentane +CH_3CH_2OHCH 3​ CH 2​ OH