The set of reagents that needed to carry out the following conversion are
`CH_(3)-CH_(2)-C-=CHtoCH_(3)-CH_(2)-CH_(2)-CHO`
A. `H_(2)O //HgSO_(4)//H_(2)SO_(4)`
B. `B_(2)H_(6)//THF,H_(2)O_(2)//OH^(-)`
C. `H_(2)O //H^(+)`
D. `Hg(OAC)_(2),H_(2)O,NaBH_(4)`