Which of the following is NOT true about working with formulas?

 (1 point) a.When a formula that contains cell references is copied to another cell, the cell reference will change to reflect the destination cell relative to the original cell. b.In Excel, formulas always begin with an equal sign. c.Cells that contain formulas can be treated like any other worksheet cell. d.To copy a formula and not change relative references, select the formula in the formula bar, click Shift + Esc, select the destination cell, and then click Insert.