Complete the following reaction `:`

Explanation

i. `H_(2)+Ni_(2)b(P-2` or Brown catalyst `)` reduces `(C-=C)` to `(C=C)` only in syn `-` addiction.
`ii.` Birch reduction `(K+`liq. `NH_(3)+EtOH)` also reduces `(C-=C)` to `(C=C)` but in anti `-` addition.
`iii.` `Sia_(2)BH(` di`_` sec `-` isoamyl borane `)` is a sterically hindered dialkyl borane and reduces less `-` hindered `(C-=C)` to `(C=C)` and less `-` hindered `(C=C)` to `(C-C)` in the presence of `CH_(3)COOH`, but with `H_(2)O_(2)//O^(Θ)H` it gives anti`-` Markovnikov's products `(` alcohols `)` that tautomerise to give aldehydes or ketones.