A hgydrocarbon X adds on one mole of hydrogen to gives another hydrocarbon and also decolourises bromine water.X reacts with `KMnO_(4)` in presenece of acid to give two moles of the same carboxylic acid.The structure of X is:
A. `CH_(3)CH=CH.CH_(2)CH_(2)Ch_(3)`
B. `CH_(3)CH_(2)CH=CHCH_(2)Ch_(3)`
C. `CH_(3)CH_(2)CH_(2)-CH=CHCH_(3)`
D. `CH_(2)=CHCH_(2)CH_(2)CH_(3)`