Using the toyu database (which is provided separately), write the relational algebra expressions for the following data problem. You may copy and paste the following symbols if desirable: nopnU* x-V A. List the names, majors, minors, and credits of all students who have 30 or more credits, and majoring or minoring in CSCI, together with classld and grades of all courses taken by these students. 401 | fname | Iname major | minor | credits | classId | grade +--- ----- ----+------- | Tony I Hawk ICSCI | CINE 401 10000 A | Tony | Hawk |CSCI | CINE | 10001 IA | Tony 1 Hawk ICSCI | CINE 10002 | B+ | Tony I Hawk | CSCI ICINE 1 401 40 10003 IC | Tony I Hawk |CSCI | CINE 1 10004 | A- | Tony | Hawk ICSCI | CINE 1 40 11001 ID | Mary | Hawk CSCI | CINF 35 10000 | NULL | Mary I Hawk | CINE 1 351 10001 | A- | David Hawk | CSCI | ITEC 1 66 10000 | B- | David Hawk |CSCI | ITEC 1 661 10002 | B+ | David Hawk CSCI | ITEC 1 661 10003 ID +------- 1 1