Which of the Following Is the Main Advantage of M-Commerce

Which of the following is the main advantage of M-commerce?

A) The ability to establish direct relationship with customers
B) The ability to provide easier-to-use user interfaces
C) The ability to support personalized and uninterrupted communications and transactions.
D) The ability to reach consumers in real-time, at the point of service, based on their current location
E) None of the above