An organic acid (X) has molecular formula `C_(8)H_(16)O_(2^.)` X on heating with `NH_(3)` forms Y which on treatrmentr with alkaline `Br_(2)` from Z.Z on treatament with `HNO_(2)` followed by with `H_(2)SO_(4)` gives 2,4- dimethyl l-2 pentene. How many different acids (X) can give the indicated final product?
