Shannon paid $57.25 for 28 pounds of potatoes. Shannon estimated the cost per pound to be $3.00. What is her error?
A.Shannon rounded $57.25 to $40 and 28 pounds to 20 before dividing.
B.Shannon rounded $57.25 to $60 and 28 pounds to 20 before dividing.
C.Shannon rounded $57.25 to $40 and 28 pounds to 30 before dividing.
D.Shannon rounded $57.25 to $60 and 28 pounds to 40 before dividing.