[QA] Which of the following is NOT true according to the passage?

Question:

Which of the following is NOT true according to the passage?

• A.
  A lot of money has been invested into the new payment system by banks.
• B.
  Payments using smart cards may increase to more than $50 billion.
• C.
  Rail tickets can be purchased by mobile phones or smart cards in Japan.
• D.
  Dealers are freed from handling money thanks to e-cash.