Database: computer_student
Question: List the professor ID who taught the course ID from 121 to 130 of basic undergraduate courses.
SQL: SELECT T2.p_id FROM course AS T1 INNER JOIN taughtBy AS T2 ON T1.course_id = T2.course_id WHERE T1.courseLevel = 'Level_300' AND T1.course_id > 121 AND T1.course_id < 130