Linda's grandmother baked brownies on Saturday for her church's bake sale. She cut each batch of brownies into 9 large pieces. She made 81 brownies before lunch and by the end of the day, she had made 153 brownies altogether. How many batches of brownies did she make after lunch?

Which shows steps needed to find the solution?

A)
81 ÷ 9 = 8 and 9 x 8 = 72

B)
153 - 81 = 72 and 72 ÷ 9 = 8

C)
153 + 81 = 234 and 234 - 72 = 162

D)
153 - 81 = 82 and 82 ÷ 9 = 9