a) Give the major elimination product derived from each of the following elimination reactions. Pay attention to stereochemistry where appropriate.

2-Bromo-3-methylbutane
(H3CH2C-O(-)Na(+))-> ethanol

[Ethanol is below the arrow while (H3CH2C - ONa) is on top. the plus sign is above the N and the minus sign is above the O]

b) CH2CH2CH2CH2CH2CCH2I (H3C)3C-O(-)K(+) /(H3C)3C-OH -->

[The (H3C)3C-OK is on top of the arrow while the (H3C)3C-OH ]

thank you for helping in advance!