The Proposed London Ferris Wheel Is 135 Meters in Diameter $y=h(t)$

The proposed London ferris wheel is 135 meters in diameter and makes one revolution every 30 minutes. Let $y=h(t)$ be the height above ground after $t$ minutes of riding. What does $h(2 t)$ represent?

A) The height on a wheel which is 2 times larger in diameter than the London one.
B) The height of a person who boarded the London ferris wheel 2 minutes before you.
C) The height on a ferris wheel that runs 2 times faster than the London one.
D) The height on the London ferris wheel with a loading platform 2 meters off the ground.