单选题：以下程序运行输出为（）
以下程序运行输出为（） @[A](2)
```
balance = 20
while True:
if balance <9:
break
balance -= 9
print("balance is %d" % balance)
```
A. balance is 2
B. balance is 7
C. balance is 11
D. 程序无限循环，无输出
A.balance is 2
B.balance is 7
C.balance is 11
D.程序无限循环，无输出
答案：A
```
balance = 20
while True:
if balance <9:
break
balance -= 9
print("balance is %d" % balance)
```
A. balance is 2
B. balance is 7
C. balance is 11
D. 程序无限循环，无输出
A.balance is 2
B.balance is 7
C.balance is 11
D.程序无限循环，无输出
答案：A
