Which of the following correctly makes and supports a claim about the change that occurred?

a
A physical change occurred which is evidenced by the change in color of the solution.
b
A chemical change occurred which is evidenced by the change in color of the solution.
c
A physical change occurred which is evidenced by the dissolved iron in the solution.
d
A chemical change occurred which is evidenced by the dissolved iron in the solution.

b

A chemical change occurred which is evidenced by the change in color of the solution.