Please i need help ASAP

This is a three-part question. Answer all parts. a. What is consumer surplus? How does uniform pricing give rise to consumer surplus? [2 points] Magna Publications is a popular provider of content and professional development opportunities for higher education faculty and staff. It recently published a book on lessons learned from the extended online teaching experience during the pandemic. The pricing structure for purchasing copies of the book is: $34 per copy for 1-9 copies, $22 per copy for 10-49 copies, $15 per copy for 50+ copies. b. What is the name for the type of pricing structure adopted by Magna Publications? [1 point] c. What is Magna Publications' objective in coming up with this pricing structure? [2 points]