对多数学生而言，集中复习的效果优于分散学习。( )

A．The Renaissance period witnessed an extreme emphasis on gender differentiation in clothing.
B．The earliest jeans were not blue but brown.
C．Originally, tailcoat was created for the equestrians to ride conveniently.
D．Formal dress code emphasizes comfort and personal expression.

A．错误
B．正确