Consider the following reactions : (a) \({\left({\mathrm{CH}}_{3}\right)}_{3}\mathrm{CCH}\left(\mathrm{OH}\right)\mathrm…

Consider the following reactions :

(a) \({\left({\mathrm{CH}}_{3}\right)}_{3}\mathrm{CCH}\left(\mathrm{OH}\right)\mathrm{C}{\mathrm{H}}_{3}\overset{\mathrm{Conc}.\text{ }{\mathrm{H}}_{2}{\mathrm{SO}}_{4}}{\to }\)

(b) \({\left({\mathrm{CH}}_{3}\right)}_{2}\mathrm{CHCH}\left(\mathrm{Br}\right)\mathrm{C}{\mathrm{H}}_{3}\overset{\mathrm{Alc}.\text{  }\mathrm{KOH}}{\to }\)

(c) \({\left({\mathrm{CH}}_{3}\right)}_{2}\mathrm{CHCH}\left(\mathrm{Br}\right)\mathrm{C}{\mathrm{H}}_{3}\overset{{\left({\mathrm{CH}}_{3}\right)}_{3}{\mathrm{CO}}^{-}{\mathrm{K}}^{+}}{\to }\)

(d) \({\left({\mathrm{CH}}_{3}\right)}_{2}\underset{\underset{\mathrm{OH}}{|}}{\mathrm{C}}−{\mathrm{CH}}_{2}−\mathrm{CHO}\overset{\Delta }{\to }\)

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

[JEE Main 2020, 7 Jan (Shift 1)]