在先天性脊柱侧凸病因中，下列哪项是常见的（）

A.姿势性脊柱侧凸

B.代偿性脊柱侧凸

C.骨源性脊柱侧凸

D.神经源性脊柱侧凸

E.肌源性脊柱侧凸

For all the remaining items the stated dates of delivery are approximate, but （） would these dates be exceeded by more than ten days.

A. in no case

B. in any case

C. under any circumstances

D. by all means