Complete the following reaction with appropriate reagents.
`a.`
`b.`

Explanation

a. `(D)` Has `(C=C)` bond in the ring that can be obtained by the dehydration of alcohol. So, `(C)` is an alcohol. Alcohol `(C)` is obtained by the reduction of `(gtC=O)` group.
`:. (B)implies ( gt C=O)` group.
`( gt C= O)` group can be obtained from `(A)` by ozonolysis.

b. Procedding reverse.
`(D) implies` one `Me` and one `-OH` group. It can be obtained by adding `(Ci_(2)+H_(2)O)(HOCI)` to `(A)`.
`(B) implies ` will have one `OH` and one `CI` group, now one `Me` group can be added to `(B)` by Corey`-` House syntehsis or Wurtz reaction of `(B)`