下列代码中( )生成的函数曲线更光滑。
A . import numpy as np;x=np.arange(0, 2*np.pi, 0.1);y=sin(x)
B . import numpy as np;x=np.arange(0, 2*np.pi, 0.01);y=sin(x)
C . import numpy as np;x=np.arange(0, 3*np.pi, 1);y=sin(x)
D . import numpy as np;x=np.arange(0, np.pi, 0.5);y=sin(x)