A clothing store used the sign shown below to advertise a discount on shirts. DISCOUNT Buy Two Shirts Get 50% Off Third Shirt Ky wants to buy three shirts, which were originally priced $49.96 each. The store will discount the price of the third shirt and then apply a 7.1% tax to the total cost of all three shirts. Including the tax, what will be the mean cost of each shirt? A $41.99 B $42.70 C $44.59 D $45.18​