Use only Subqueries to retrieve following information. [5+10=15 Marks] a. Fetch a complete list of customers along with the number of orders they have placed. b. Display the least expensive Product Name and Name of the Customer who has bought most of them. Also show the name of the supplier who supplied that particular product. Use only Subqueries to retrieve following information. [5+10=15 Marks] a. Fetch a complete list of customers along with the number of orders they have placed. b. Display the least expensive Product Name and Name of the Customer who has bought most of them. Also show the name of the supplier who supplied that particular product