[单选题]When offering feedback, teachers could_______. ()BfW答案窝(daanwo.com)-大学生作业答案及考资分享平台 Asupport learners’ effortsBfW答案窝(daanwo.com)-大学生作业答案及考资分享平台 Bguide themBfW答案窝(daanwo.com)-大学生作业答案及考资分享平台 Cprovide cues for improvementBfW答案窝(daanwo.com)-大学生作业答案及考资分享平台 DAll of the above