his question pertains to setting up and using a solver within a spreadsheet. Give the best single correct answer

Select one:

a. The changing cells refer to the variable cells

b. All cells stay where they are, so no cells change, and changing cells refers to something different

c. The changing cells refer to all cells, because the value of any cell can change

d. From when we set up and initialise the problem through until after the Solver has run, no cell value changes

e. The changing cells refer to the objective function, because the objective target function changes when the variables change

f. The solver software will not run unless the various cells (target, objective, used, etc.) have different colours