Which of the following is NOT tru...

Câu hỏi: 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.