Reaction of one molecule of HBr wit one moleculae 1,3-butadiene at `40^(@)C` gives predominnantly
A. 3-bromobutene under kinetically controlled conditions
B. 1-bromo-2-butene under thermodynamically controlled conditions
C. 3-bromobutene under thermodynamically controlled conditions
D. 1-bromo-2-butene under kinetic controlled conditions