单项选择题

下面程序计算一个整数的各位数字之和。在下划线处应填写的语句是()
SET TALK OFF
INPUT"X=Y"TO x
s=0
DO WHILEx!=0
s=s+MOD(x,10)
_________
ENDDO S
SET TALK ON

A.x=int(x/10)
B.x=int(x%10)
C.x=x-int(x/10)
D.x=x-int(x%10)