（单选题）
Click the Exhibit button. 
What is the output of the program shown in the exhibit?（）
A300-100-100-100-100
B300-300-100-100-100
C300-300-300-100-100
D300-300-300-300-100
正确答案
答案解析
略
What is the output of the program shown in the exhibit?（） A300-100-100-100-100
B300-300-100-100-100
C300-300-300-100-100
D300-300-300-300-100
