单项选择题

设首项为100,按R10系列确定后5项优先数为(    )。
   A.106,112,118,125,132
   B.112,125,140,160,180
   C.125,160,200,250,315
   D.160,250,400,630,1000

A.106,112,118,125,132

B.112,125,140,160,180

C.125,160,200,250,315
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