Answer :
B and D.
B finds the price for all the rose bushes first, then finds the price for each park.
D finds how many bushes will go in each park first, then finds the price the park will pay.
They are answering the same question, just in a different order.
B finds the price for all the rose bushes first, then finds the price for each park.
D finds how many bushes will go in each park first, then finds the price the park will pay.
They are answering the same question, just in a different order.