Genma Steel, a Steel Manufacturer, Caters to Industrial Companies and Has

Genma Steel, a steel manufacturer, caters to industrial companies and has set up a corporate Web site in order to show potential customers its products and services. Alongside the products are the testimonials of the various companies that have used Genma's products and services. Which of the following major online marketing domains is evident from this example?

A) B-to-C
B) C-to-B
C) B-to-B
D) B-to-G
E) G-to-B