If the equation is complete the products would be manganese chloride and oxygen gas would be given off.
MnCl2 + O2
Vegetable soup should be the correct answer. The reason for this is that it can easily be split, where as the rest would be very difficault if not imposible because of chemical change.
1 A1Br3 + 3 K = 3 KBr + 1 A1
