$1\mathrm{.}4$ Create a PivotTable to examine if coupons affect Classic Burger sales.

a$.$ Create a PivotTable on the ClassicBurgerByCoupon worksheet to answer the question, "Did the coupons affect the sales of Classic Burgers?"

b$.$ Show the AVERAGE, MIN, and MAX Classic Burgers sold.

c$.$ Add the Coupon dimension to the PivotTable.

d$.$ Make a PivotChart for the DivotTable data.