【单选题】 A SELECT s_id,AVG(s_score)
FROM score
GROUP BY s_id
HAVING AVG(s_score)>60; B SELECT s_id,AVG(s_score)
FROM score
GROUP BY s_id
AND AVG(s_score)>60; C SELECT s_id,AVG(s_score)
FROM score
ORDER BY s_id
HAVING AVG(s_score)>60; D SELECT s_id,AVG(s_score)
FROM score
GROUP BY c_id
HAVING AVG(s_score)>60;
