Compound (X) with molecular formula `C_(3)H_(8)O` is treated with acidified potassium dichromate to form a product (Y) with molecular formula `C_(3)H_(6)O`. (Y) does not form a shining silver mirror on warming with ammoniacal `AgNO_(3)`. (Y) when treated with an aqueous solution of `NH_(2)CONHNH_(2).HCl` and sodium acetate, gives a product (Z). The structure of (Z) is

Options

A. `CH_(3)CH_(2)CH=N NHCONH_(2)`
B. `CH_(3)-underset(CH_(3))underset(|)C=N NHCONH_(2)`
C. `CH_(3)-underset(CH_(3))underset(|)C=NCONHNH_(2)`
D. `CH_(3)CH_(2)CH=NCONHNH_(2)`

Answer

A