The major product of the f following reaction is:

Consider the following reactions:
$\left(\mathrm{a}\right)$ ${\left(\mathrm{C}{\mathrm{H}}_3\right)}_3\mathrm{C}\mathrm{C}\mathrm{H}\left(\mathrm{O}\mathrm{H}\right)\mathrm{C}{\mathrm{H}}_3\stackrel{\mathrm{c}\mathrm{o}\mathrm{n}\mathrm{c}.{\mathrm{H}}_2\mathrm{S}{\mathrm{O}}_4}{\to }$
$\left(\mathrm{b}\right)$ ${\left(\mathrm{C}{\mathrm{H}}_3\right)}_2\mathrm{C}\mathrm{H}\mathrm{C}\mathrm{H}\left(\mathrm{B}\mathrm{r}\right)\mathrm{C}{\mathrm{H}}_3\stackrel{\mathrm{a}\mathrm{l}\mathrm{c}.\mathrm{K}\mathrm{O}\mathrm{H}}{\to }$
$\left(\mathrm{c}\right)$ ${\left(\mathrm{C}{\mathrm{H}}_3\right)}_2\mathrm{C}\mathrm{H}\mathrm{C}\mathrm{H}\left(\mathrm{B}\mathrm{r}\right)\mathrm{C}{\mathrm{H}}_3\stackrel{{\left(\mathrm{C}{\mathrm{H}}_3\right)}_3{\mathrm{O}}^{\ominus }{\mathrm{K}}^{\oplus }}{\to }$
$\left(\mathrm{d}\right)$

Which of the reaction(s) will not produce Saytzeff product?

The major product of the following reaction is :

The major product formed in the following reaction is :

${\mathrm{CH}}_3\mathrm{CH}=\mathrm{CHCH}{\left({\mathrm{CH}}_3\right)}_2\stackrel{\mathrm{HBr}}{\to }$

In the following reaction sequence the major products $\mathrm{A}$ and $\mathrm{B}$ are :