【单选题】

下列各种形式的循环中，输出“*”的个数最少的循环是()

A．a=5:b=8
Do
Print " * "
a=a+1
Loop While a＜b
B．a=5:b=8
Do
Print " * "
a=a+1
Loop Until a＜b
C．a＝5:b＝8
Do Until a-b
Print " * "
b=b+1
Loop
D．a=5:b=8
Do Until a＞b
Print " * "
a=a+1
Loop