Big Data is usually characterized by three Vs: volume, velocity, and variety. Which of the following statements best describes the velocity of data?

a. The amount of data available is significantly increased due to automatic data capture technologies.
b. The rate at which data flow into an organization has increased due to online sales, mobile computing, smartphones, and online social networks.
c. The number of sources and data formats has increased due to the increase ofdata capture technologies such as text and images from online social networks, images and voice from a camera, and voice recognition technologies, among others.
d. All of the above describe the velocity of Big Data.

B