Given that the High Roller in Las Vegas, the world's largest Ferris wheel currently in operation, has a diameter of 520 feet and completes one full rotation every 30 minutes. Calculate the speed (in feet per minute) of the bottom of the High Roller wheel.
a) 34.55 ft/min
b) 69.09 ft/min
c) 104.55 ft/min
d) 139.09 ft/min