The product of the bit rate and distance of a fiber-optic system is 2 Gbits km/s. What is the maximum rate at 5 km?
∙ a. 100 Mbits/s
∙ b. 200 Mbits/s
∙ c. 400 Mbits/s
∙ d. 1000 Gbits/s
∙ a. 100 Mbits/s
∙ b. 200 Mbits/s
∙ c. 400 Mbits/s
∙ d. 1000 Gbits/s