Which of the following statements is FALSE? a. In 1870, prior to the completion of the railroads, Houston and Austin grew as farming and ranching towns. b. In 1870, prior to the completion of the railroads, Galveston led the state of Texas as the largest city. c. In 1870, prior to the completion of the railroads, San Antonio established itself as an important military base for Texas. d. In 1870, prior to the completion of the railroad, Brownsville became the center of the cotton industry in Texas.