查询每门课程的最高分，要求得到的信息包括课程名称和分数，正确的命令是（B ）
A. SELECT 课程名称，SUM（分数）AS分数
FROM curriculum, grade
WHERE curriculum. 课程编号= grade.课程编号
GROUP BY课程名称
B. SELECT 课程名称，MAX（分数）分数
FROM curriculum, grade
WHERE curriculum. 课程编号= grade.课程编号
GROUP BY课程名称
C. SELECT 课程名称，SUM（分数）分数
FROM curriculum, grade
WHERE curriculum. 课程编号= grade.课程编号
GROUP BY curriculum.课程名称
D. SELECT 课程名称，MAX（分数）AS分数
FROM curriculum, grade
WHERE curriculum. 课程编号= grade.课程编号
GROUP BY curriculum.课程名称

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