阅读下列程序段，选出正确的结果。（）SET TALK OFF CLEARSTORE 0 TO a，b，nf=.T.DO WHILE fa=a+1DO CASECASE INT（a/3）<>a/3b=b+aCASEa>10EXITCASE a<=10n=n+1ENDCASEEND DO？n，bSET TALKONRETURN

A.n=3 b=48

B.n=4 b=48

C.n=3 b=27

D.n=4 b=27