X$.$ Which statement$($s$)$ is$/$are true of acid catalyzed alcobel dehydrations?

a Pretonation of the alcohel is a fast step.

b$.$ Formation of a carbocation frem the protonated altenhol is a slow step

c$.$ Rearrangements of less stable carbecations to mere statle carbecations are commen.

d Loss of a proton by the carbocation intermediate is a fatt step?

e$.$ All of these choices.

X$1.$ What is the mojor product of the following reaction sequence?

a$.$

d$.$

b$.$

c$.$

e$.$ More than one of these choices.

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