问题：
[单选题]According to Text B, which of the following is not true? ( )
AThere are two Inductrack designs: Inductrack I and Inductrack II.
BInductrack I is designed for high speeds, while Inductrack II is suited for slow speeds.
CInductrack trains could levitate higher but with less stability.
DInductrack uses a power source to accelerate the train only until it begins to levitate.
