; or (B) that is a service area that is served by a rural telephone company; (2) defining a rural area as underserved, with respect to mobile broadband service, if mobile broadband service that meets or exceeds the standard established under subsection (b) is not available in the area; and (3) providing that a rural area shall be considered underserved, with respect to mobile broadband service, if tests show that the average speed and signal strength of mobile broadband service available in the area do not meet or exceed the average speed and signal strength of mobile broadband service provided in the 20 most populous metropolitan statistical areas in the United States. (d) Data from urban areas To help inform the standard established under subsection (b), the Commission shall gather, and periodically update, data on mobile broadband service provided in the 20 most populous metropolitan statistical areas in the United States.