Which of the following statements is false?

a$.$ The purpose of the Auditing Toolbar is to solve one equation in with one unknown.

b$.$ The SUMPRODUCT function takes two range arguments, which must be exactly the same size and shape, and it sums the products of the corresponding values in these two ranges.

c$.$ The NPV function takes two arguments, the discount rate and a stream of cash flows.

d$.$ A two$-$way table allows you to see how a single output cell varies as you vary two input cells.