Metals bond with halogens to form colorless metal halides. During an experiment, bromine water was added to a solution of potassium iodide. A record of the experiment is shown. Experimental Record
Reactants Color of Reactants Color of Reactants after Mixing
Br2 Light orange solution Deep brown colored solution is formed
KI Colorless solution

Which of the following conclusions can be made about this chemical reaction based on the data?
Iodine is more reactive than bromine.
Potassium iodide and bromine do not react.
Potassium metal is formed from a single replacement reaction.
Iodine is deep brown in color and is formed from a single replacement reaction.