Which of the Following Statements Is False

Which of the following statements is false?

A) Internalizing external costs would make pollution prevention more profitable.
B) Internalizing external costs makes consumers more aware of the true cost of goods and services.
C) Real market prices would not always be cheaper if external costs were internalized.
D) Fuel-inefficient cars would still have competitive prices if their external costs were internalized.
E) Many costs and benefits cannot be labeled with a price tag.