执行以下代码后，输出结果是？（）data = {'Math': 90, 'Science': 85, 'English': 92} subject = 'Science' if subject in data: grade = data.get(subject, 0) if grade >= 90: level = 'A' elif grade >= 80: level = 'B' else: level = 'C' print(level)
A. A
B. B
C. C
D. 上述代码执行后报错
正确答案：B
试卷来源：202603 CCF-GESP编程能力等级认证Python三级真题