What is a characteristic feature of a crank forward bicycle?

A. The bottom bracket and cranks are set at an angle to the traditional upright bicycle.
B. The bottom bracket and cranks are set further forward, relative to the seat, than a traditional upright bicycle.
C. The bottom bracket and cranks are set at the same position as a traditional upright bicycle.
D. The bottom bracket and cranks are set further back, relative to the seat, than a traditional upright bicycle.
Answer: 