单选题：如下程序的运行结果为：

如下程序的运行结果为：
```
score = 70
if score < 70:
if score > 60:
print("OK")
else:
print("Effort")
else:
if score < 70:
print("Good")
else:
print("Excellent")
```
@[D](2)

A. OK
B. Effort
C. Good
D. Excellent



A.OK
B.Effort
C.Good
D.Excellent


答案：D